"New way" is how American kids these days are taught

>>133827959
You going to post a source or keep making bullshit up?

>>133827959
can someone explain how this new way actually works?

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>>133827959
>>133827959

Why though?

You have to understand that you look at the problem and use abstract thought to come to the easy answer. Not everyone has access to abstract thought, the expanded new way is pushed in schools because dumb students can't even without it.

>>133828107
So instead of teaching it the old ay, they have this new retarded way that requires knowing what multiples are? If the dipshit cant substract, im prett ysure he doesnt know what multiple is

>>133828095
>add numbers to the RHS of the subtraction until you get to the LHS
>make sure the numbers you add give a result that's an easy number to work with

>2017
>subtracting with pen and pencil

There's a fucking calculator on every phone.

They should probably vote to outlaw math altogether, before they do any serious damage.

>>133828221
So you pick completely arbitrary numbers?

>>133828183
It's easier for more difficult numbers where you'd have to carry the 10 and shit

>>133828270
>with pen and pencil
you've used calculators too much it seems

>>133827959
>>133828107
No fucking wonder Americans are so terrible at math, and its not even a fucking surprise that they hate it too.

so this is what cultural marxism did to math
actually fascinating, they manage to fuck up every piece of life

>>133828370

No it isn't, carrying 10's is basic as fuck. This way is pure retardation

>>133828270
>pulling your calculator to do basic math
This is one of the times that my laziness paid off. Back in high school, I was too lazy to pull out my calculator from my backpack, so I used to do it in my head. Now im amazing at mental calculations, even able to do some divisions with decimals as long as they are rational numbers.

>>133828270

>32-12
>needs his calculator

Everyone laughs at you, anon. Though you probably don't realize it because you're a tard.

>>133828270
real life math user here
people who can't solve a problem on a white board in a few seconds will be removed from my team and banished to the spice mines of kessel.

>>133828107
What's the supposed advantage of this method?

not gonna lie this shit seems more confusing to me. like why are you doing 12 + 3, what if you're working with thousands? do you just have like 20 lines going down to solve 5212 - 2121

>>133828544
Supposed to make everyone retarded, so they can curve the bell grade up and make everyone pass perhaps

>>133828270
Take some uni exams with time constraints and come back.

>>133828544
By making white kids fail black kids won't feel bad when they fail.

>>133828183
Basic arithmetics are too hard for ameriburgers so they need tricks to soften things up

>>133828544
Gimps smart kids so that dumb ones don't look bad in comparison and suffer from hurt feelings?

>>133827959
Why is common core so bad? because the teachers are untalented faggots. The old fashion way contains less interaction with teaching - and unfortunately, that is usually better.

Apparently they use this form of maths in Singapore too

>>133828107
>>133827959
I have a degree in mathematics and ive spent the last 15 minutes trying to figure out how this works and I dont get it

>>133828826
they somehow add to either 5s of 0s because reasons then they add the rest
or something like that

>>133827959
>tfw you've never been inside a public school besides for taking ACT/SAT and attending sports events
Yeah if it weren't for private schools and public school honors programs we'd be fucked. The better public schools separate the good students from the retards. The public high school I would've landed in had my parents not loved me or not had money pretty much placed the smart kids on an entirely different floor

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>>133827959
WHY THE FUCK DO YOU HAVE TO OVERCOMPLICATE SOMETHING THAT'S PERFECTLY MANAGABLE IN THE FIRST PLACE?!

>>133828183
>>133828107
The system was invented to replicate the way our brain does subtraction - by finding the difference.

Some american (((education experts))) decided this is faster than how the rest of the world has been doing it for ~700 years.

Basically fuck the USA

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>>133828359
they probably recommend them to do little steps so no mistakes happen

if you actually have to create 15 before creating 20, that would be retarded though, because it's an arbitrary rule which would just confuse and not help understanding

>>133827959
So, basically just counting on your fingers, in steps....

huh.

>>133827959
I remember teachers saying that we need to learn this because we won't all have calculators in our pocket,

>>133827959
Lol and then people get all mad about sillicon valley using so manhy H1B visas.

>>133828966
Because blacks and other darkies are incapable of learning it the other way.

>>133828826
Any they claim these guys hacked our election

>>133828564
>5212 - 2121

2121 + 9 = 2130
2130 + 70 = 2200
2200 + 800 = 3000
3000 + 2000 = 5000
5000 + 200 = 5200
5200 + 10 = 5210
5210 + 2 = 5212

>>133827959
Math teacher here
I'll try to explain the problem.
I teach at the high school level.
High school teachers teach pure math because we know math very well.
It's the elementary school and middle school teachers who are bad at math
>They don't know math so they teach verbatim from the shitty common core book
Any middle school teachers who ACTUALLY understand math do not teach this shit

>>133828544
It's replacing the old way with one that is much slower to solve, but it allows for less mistakes because it makes more sense in the mind of dumber people.

First it simplifies abstractions into larger more absolute numbers to keep track of in the brain, and then makes the student solve the problem with the mental equivalent of counting your fingers like a crosseyed retard.

>>133827959
>>133828107
This is the way a lot of mathematicians add / subtract in their heads though.

>>133828966
You could say the same about solving x^2 + 4x + 4 = 0. Obviously the answer is x=-2 since it's easy to factor, but once you have something more complicated like 5x^2 + 43x + 56 = 0 it isn't immediately clear what it factors into. Either way, the point is that different people understand different methods better and it's important to introduce all of them so more people understand it properly.

>>133829144
So instead of one subtractin, they did a zillion addition.

WTF americunts

>>133829213
I mean just think about it.
If you didn't know how to do something at your job and you knew a book would help
You'd use the book
And if you had no idea how to do math you'll follow some fuck awful method

>>133827959
I hate this country more everyday. It will never be great again.

>>133829272
Mathematician here
No we don't

>>133829213
>School teachers don't know how to do basic addition/subtraction

Perhaps they shouldn't be teaching then. Perhaps they shouldn't be doing anything as a matter of fact.

>>133828107
Am I the only one who thinks this is easier for children? Seems faster, don't know wtf you're all bitching about oldfarts.

>>133827959
This example is overcomplicated, but i see how this might be an easier way to do math without pen/paper at all

>>133829359
It's a shame
It really is
I teach freshman so I spend first half of the year forcing them to do math better than this
All high school math teachers do

>>133829354
That's how I add and subtract in my head. I round and then add the other parts later and I know a lot of people who do the same thing.

>>133828826
Once you go to higher math levels, your algebra goes to shit. That's what most people in higher math classes lose points on, not on stuff like diffeqs

>>133829272
engineer here, although not a mathematician, I definitely do not proceed that way in my head. I actually count down instead of up.

They teach common core in GA too. My 12 year old has to use it. When he asks me for help, I can only show him the non retarded way, which only gets him partial credit since he doesn't show his work. They intentionally want our kids to be stupid and helpless. The bad part is, I guess since this shit way of teaching is new, they send him home with a paperback book with only problems, not a thick hardback book that has 2 pages of explainations of their theorum. So I have no way to help him understand his to work a problem like they want. I have to tell my son "here son, let me show you the non fucktard way to divide 32 into 1245."

>>133828270
this was probably also one of the reasons it was changed. the old way is pencil work. The new way can be used to approximate without paper and pencil

https://www.youtube.com/watch?v=vDgo4163fB0

>>133828183
John Taylor Gatto has pointed out that making people incoherent so they can't think for themselves is one of the stated goals of schooling

>>133829272
>x^2 + 4x + 4 = 0
>x=-2
Only one solution?

>>133829144
Oh ok, I get it now

Why isnt your minister of education fired yet burgers?

>>133829282
Addition is easier than subtraction for most people (same with multiplication vs division). It's just a way for DeShawn to learn something.

http://www.oecd.org/pisa/
Select mathematics

>Burgers still laughing at leafs

>>133829144

>5000 + 200 = 5200
>5200 + 10 = 5210
>5210 + 2 = 5212
was it really necessary for these steps to happen? Why not merely add 212 once you reach 5000?

>>133829480
KEEP DOING THIS
Let him lose the points
It will pay off in the long run
He will be better off for sure

>>133829470
I mean it's the same method going up or down.

>>133829497
x^2 + 4x + 4 factors into (x+2)^2. If you think of it graphically, the parabola intersects the x axis only at the point (0,-2).

>>133829144
This method 8 steps + adding at the end

Normal substract method 4 steps

How is this even remotely useful?!?

>>133829524
No, but I assume kids with two brain cells to rub together would start doing that once they understood the method.

>>133829481
>approximate

Approximation should be illegal unless it is the only way to solve a problem. When you can actually find the real value of 32-12, why the fuck would you want to approximate anything. You ain't solving non-linear ODEs/systems

>>133829524
Because it is targeted at 1st graders and has a goal to teach everyone, no? This type of things happen all the time in schools.

>>133829093
This implies they learn this method just fine. Do they?

>>133828773
No they don't. They teach counting up as a visual aid, as in "325-38" is "[ |38], how big would the portion of the box before the line be to make the box width 325" sort of idea to get kids to have an understanding of what's going on in subtraction, the entire point of their early maths education is to go "physical objects (give some kids a bunch of tokens, ask them to take x out and count)->visual problems (like above)->abstract", so that the kids undestrand what's going on when abstracted instead of just thinking of it as some algorithm they have to follow. America has taken the visualisation step, gone "they're counting up", turned into a pretty ludicrous algorithm, then penalised kids who do it any way other than their prescribed algorithm (bring it up to the same hundred then take off the difference, so 300-13 would be my personal way of doing that mental arithmatic, but there's many possible ways to break it down, only one of which is the one they accept). The starting point is the same, the end message is the complete opposite of what Singapore tries to achieve.

>>133827959
Common core is the explicit teaching of mathematic shorthand most people naturally develop throughout their education and early development. The way most people solve sums like that is to break it down into small components, usually easy to use numbers like 5 or 10, and then reconstruct those components. For the one in the OP I would go 32-2 is 30, 30-10 is 20, and then I have the solution. Most people do this to some degree whether they know it or not, and if you are aware of it you can use it to answer larger and more difficult problems.

Someone realised that niggers weren't doing this and as a result they sucked shit at math. They generally lack the ability to do abstract thinking, as a result they can't separate themselves from the problem in front of them. They can't break it down into smaller problems because without that abstract level of thought they can't imagine those smaller problems, they don't exist for them. They will sit there and instead try to remember when they were explicitly told what 32-12 is equal to, and when they can't remember (probably because they were never told) they guess and fail. So they're starting to be taught the explicit steps (most people figure out naturally) to solve a problem.

I hate it because it means students aren't learning how to think, they're being told how to do things like a machine. This has serious impacts on a growing mind's ability to think for itself and critically evaluate things, peoples and ideas. Tell a student "Here is a problem, solve it" means that they can develop their thinking and apply that outside the classroom because now they can think for themselves. "Here is a problem and here is exactly what you need to do to solve it" results in them being dependent on other people giving them the solution for the rest of their lives. This is what (((they))) want because it gives them ultimate control on society, people literally being told HOW to think , it's all conditioning.

>>133827959
This is retarded even by common core standards.
I don't understand why they didn't just do 32-2=30, then 30-10=20 like they usually do.

>>133829272
>>133828107
my method has always been (and always will be):
325-38
300-(38-25)
this other way seems retarded

>>133829835
But what gets me salty is how /pol/ is mostly edgy retards who only hate common core because
>hurr it's different and me no understand

>>133829514
We are talking about substraction under 20!!

9-4, 5-2, 8-3, 11-7 etc

You memorize this shit.

>>133829480
32 divided into 1245 is 0.02570281124.
>Brainlets, when will they learn?

>>133827959
>>133828107

it's supposed to approximate mental math. e.g. for 32-12, you do -10 and -2 to get 20. for 325-38, you do 25-38 which gives -13, then 300-13 to get 287.

but the problems are twofold. first, you have to learn the fundamentals before you start doing mental shortcuts. you don't start with the tricks and shortcuts.

secondly, they're teaching it in the most backwards, retarded, inefficient way possible. note how the examples given take WAY more steps than my method.

>>133829835
This basically. The only thing I'd add is that reason why it is addition is because most people find addition easier to think about.

>>133829580
It goes beyond rounding up arguments for easier mental math. That part is simple. I'll try and find one of his books from last year. It's astonishing how far beyond complicated they make some things. I'm no mathematician, but I am a EIT. Math is my strong suite.

>>133829480

This is an age old problem though. I was always too smart for the level of education at 8-12 years old; getting lesson concepts in 5minutes when the teacher had planned 60minutes of lesson.

What makes the difference is finding a good teacher - science teachers set me abstract problems after I had completed the lesson early and these inspired me to go on to be a scientist.

>>133828518

The best mathematician is a lazy one

t. PhD discreet mathematics -Princeton

>>133827959

Bullshit even common core would have you remove 2 from both and then 10.

>>133829835
>Someone realised that niggers weren't doing this and as a result they sucked shit at math
Holy shit, at some point, you should just ship them back to the nigger continent where nothing grows.

>>133827959
My little girl starter kindergarten next month. Is this something I should worry about for the future? My niece goes to the same public school and I've yet to see this method on her homework.

>>133828544
You change one bit at a time, which takes more steps but each step is fast and more consistent for fast mental math. This seems completely useless for math on paper and to young kids which this common core shit is directed at

>>133828826

>Russian """""degrees""""""

>>133828107
>subtraction is done via sums
Burgers explain this shit

>>133830089
this, most of these posts are deceptively created by butt-blasted teachers to invoke backlash from the community

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American children are unironically this

I hate Globalists

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>>133828043

>>133829940
It's cheaper and easier to give kids simple tricks so they pass their standardised testing whether they understand it or not though

>>133829957
https://youtu.be/vCDoV4aSg1c

>>133828192
you mean niggers?

>>133830089
Quiet you fuck fish head eating slant eyed fuck. It's cause of you soulless gooks that they've decided to teach outright kids this retarded shit.

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>>133829368
Yep, the new way just makes more sense.

>>133830308

kys

>>133829903
You don't even have to memorize it, you got 10 fingers, and that is all you need to solve most problems using the regular method. You usually won't be having carry digits that are over 10 in total for elementary level math, as to not confuse the kids.

>>133830274
that's true. hopefully Trump will dispose of Common Core.

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>>133829835

>>133827959
I understand that on one hand the whole point of common core is to instruct the easy way to solve problems mentally by adding enough steps so that growing children can comprehend it. Something that would be fine if this is to illustrate the importance of doing things on top of your head and hopefully develop the necessary skills to keep doing it with more complex problems and with less steps as they grow.

On the other hand, this is probably a jewish trick so I'm going to be cautious about this.

>>133827959
>a guy from Poland is going to tell americans what's going on in america

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>>133828107

>or use the left to right method

Hmmm

https://youtu.be/G7_kaRryUNs

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The new multiplication method is actually simpler

>>133827959
>Euroistani people are the best resource on information concerning the United States.

I have never seen this in the US, from what i assume it is.

I would assume a method like this could be used for more advanced math to give a more indepth concept behind the math problem.

>>133830497
>rage comic meme machine math teacher

>>133828192
God, if this isn't the best example of how culture always regresses to the lowest common denominator. It's so fucking sad, we've got to get rid of these subhumans, or just balkanize.

It happens with music and language too. Everywhere I go that's young and social or trying to be hip is infested with nigger music. My gym blasts it even though I work out in a neighborhood that even I can't afford. The underclass never rises up, because they lack the agency to do so. Instead, the only way to live in harmony is for everyone to meet at the bottom.

It takes far more time for such a simple mathematical task

>>133830588

Yes, but old memes aside, the point as that the convenience depends on the numbers.

They teach you with numbers that will take longer the same reason they make you do long division. It's to give you more practice with less questions and more variety. Then the smaller ones will be that much simpler.

>>133828183
>force kids to learn method their parents have not been taught
>parents cannot teach the child
>child must rely on the state

Much like the plan behind the war on drugs, used to take black fathers away from their families and force the mothers and children to rely on welfare.

This way is more managble in my head desu, isn't it just the standard way to count change back to a person.

>>133827959
(((2+2=5)))

>>133830512
Thats actually correct, thats way easier than regular multiplication.

7x223 = 1561
7x200 = 1400
7x20 = 140
7x3= 21

Add together and it equals 1561

>>133827959
People who don't know math are much easier victims for (((banks))) and (((quick loans))).

>>133830512
Which of those is supposed to be the new method? Because the right can't be it, seeing how just about everyone already multiplies like that already.

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>>133830469
Probably because people from post communist countries can sniff out usual commie swine tricks from an ocean away.

>>133827959
chinese plot to make us retarded

checkmate, most of us have always been retarded, you won't get us all

>>133830512
Got one for the division? I have problems with that.

>>133830759
These methods are designed so people that don't think of these mental routines themselves can learn them.

>>133830274
This is the correct answer.
If DShawnai can pass the test then all is well

>>133827959

They know americans make a big wrong step in their life so now they try to change the way of thinking by learning them to take small steps.

>>133828826
I was helping my nephew a few years back, who was 11 or so at the time. He was a typical ADD kind of kid, really intelligent but not conscientious and would make tons of careless mistakes especially in math. He would solve math problems using some expansive method that breaks down the numbers into their roots or something. It was nothing like this but I still had no idea what the fuck was going on. My intuition tells me these types of methods leave too much room for error due to increasing the number of calculations that need to be made. He seemed to do better when I showed him the old fashioned way as shown in the OP. i mean for fuck's sake, there's so much sheer writing being done here, he would sometimes make mistakes because of incomplete erasures bleeding through into the new work.

>>133830759
We do it that way back but it's not taught that way. Sensible people figure it out for themselves. Niggers don't have the mental capacity to problem-solve and can only do it this way if explicitly told to do so

>>133829144

This is a very strange way to do it.

No one else doing it:
5212 - 2112 = 3100
3100 - 9 = 3091
Where 9 is the difference between 2121 and the more convenient (situational choosen) 2112.

Also the calculation is done In your mind, obviously.

>>133830744
I graduated ages ago but I use that for quick and dirty mental math when I need to quickly guesstimate the ballpark solution.

>>133830512
The "old" way, or at the way that has been taught here for at least 3 decades was:

_23
* _7
__
140
_21
__
161

(formatting is fucked up, but you do 7*2 and put a zero at the end because you're multiplying the tens, then do 7*3 and it's in the unit placement, then add)

The "new" way is just the old written horizontally, maybe making more explicit what's going on in column placement, but knowing which is the hundreds, tens, units etc. column should be taught with fucking counting.

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>>133828107
this can't be real

>>133831007
Well its not a guess haha its the real solution

>>133830340
Heh, this is how I was taught to make change at a cash register when I was 16. So, the art and majesty of mathematics has been dragged down to the level of counting physical tokens in your head, and called education.

>>133831000
Well, I put every single step in there because this is like first grade shit. Most people would take fewer computations than that.

>>133831087
Yes, your example is. But the process it illustrates is what I use for Q&D guesstimates. Just for quick checking. If the guesstimate is 1,5k then the answer can't be 2k, if you get what I mean.

>>133830982
Get used to your people having to play ball with niggers now. The ride is over. The liberal scum won't allow niggers to be held back so they're gonna hold your kids back.

I'm from Chicongo and my grammar school neighborhood had a trivial amount of niggers, 1 or 2 in a given classroom, occasionally 0. It was like that in the late 80s up until the turn of century, and we did pretty well school wise despite being kinda lower middle class. But at some point Chicago closed down a bunch of projects and relocated the niggers to my old neighborhood so the schools have a nontrivial amount of niggers now and I'm quite certain they're doing nigger math like this now.

and what is wrong with the "old fashion" way?

>>133827959
where the fuck are they getting those other numbers from?

>>133831274
it didn't work well for mental maths, relying mostly on layout tricks when put to paper.

>>133831274
nothing. you're being educated stupid

>>133829870

>my method has always been (and always will >be):
>325-38
>300-(38-25)
>this other way seems retarded

Lol, for me that would be:
325 - 50 = 275
275 + 12 = 287

No one else doing it this way?

>>133829502
It's probably because their education ministry is run by left-leaning psychologists

>>133831322
They're "counting up" from 12 to 32, using numbers that get them to easy increments (5, 10, etc.) and then adding up the result.

People get very alarmist about this shit but the truth is kids are taught both ways and some kids find it very helpful to "subtract" entirely by addition.

>>133830744

But then the child has to do the addition. Whats the point? Wheres the advantage over the old method?

>>133829870
325 - 30 = 295
295 - 8 = 287

>>133828107
This might be useful for mental maths but if you have pen and paper the "old" way is like 5 times more efficient

>>133831322
You count up from 12, each step to the nearest easy number.

I'd have gone +8 +10 +2 to make 20, 30, 32 but you can do it with the five as the first step.

>>133831480
The old method you also have to do addition, except the order of operations and the input variables are less clear.

>>133831370
I do it that way sometimes, depends on the numbers for me desu.

>>133831523
This is pretty much. Kids are still taught both ways, we are emphasising the newer way though now because kids don't care about writing out their sums anymore when everyone has a computer in their pocket.

>>133830512
WTF is with the boxes and arrows and shit.
You multiply 7x20 and 7X3 and then add up that is it what else is there to explain
. All this nonsense in this diagram just adds confusion on both sides.

>>133827959
ITT: basement dwellers get angry at new methods of instruction

>>133831409

You mean a bunch of kikes?

Someone post more common core. I like trying to figure out the methods.

>>133831370
325-38
(325-25) - (38-25)
300 - 13
287
Am I a common core nigger?

>>133829213
France here. Same problem.
I teach at the high school level and I grade final exams. Everything is done to boost the grades. "Pedagogues" crashed the system. The more it goes, the less pupils know. One just has to compare programs during the 70's and nowadays.
They call it "chances balance". In fact it's a catastrophe.

>>133831626
How do you expect them to shill their method if they didn't make the other one look needlessly confusing?

>>133827959
c O n V o L u T e D

>>133831668

I think they take an extra step or two for the retards.

>>133827959
so who gives a shit.
It's practically irrelevant how someone adds or subtracts numbers in their head. Doesn't matter if it's through a song or some tables.

Just get the number right.

>>133829310
How the fuck can a grown human fail at teaching kids to add numbers up to the hundreds?

>>133830744
That is no different than doing it the old fashioned w>>133830744
y, you just do it from left to right instead of right to left. You stil do 7*3,7*2,7*2.

The problem is that instead of teaching it the old fashioned way, so they can apply it to anything, including decimal numbers, they teach it in the new way, that people use when doing the multiplication in their head, because some niggers don't have enough brainpower to do it without being told how to.

Teaching kids math is fucking retarded anyway.

When's the last time you actually needed to do math? Did you do it by hand or did you use a calculator?

Besides. Anything behind multiplication and division is truly useless unless it is not specific.

When's the last time you needed to use algebra or calculus in your every day life?

That's why we have calculators kids.

So let me get this straight.
They made a really fucking stupid thing that supposedly makes it easier for niggers, while everyone with an IQ above 70 will suffer, because if they use the right method on a test and show their M.O they don't get points, right?

>>133827959
Seriously this is retarded if this method is meant to represent how mind think.
Most people have big difficulty to remember more than 5-7 objects in their short memory.

So what's more simple ?
- To remember two numbers and substract following digits from second one, or remember 5-6 numbers from each addition to add them in the end?

This smells as some wierd commie shit to "equalise" people below.

>>133831668
I think this is actually one of the common core methods. You just figured it out for yourself.

Most people use tricks like this anyway, common core is a way to try and teach them to kids who don't figure them out so they can pass their standardized tests.

>>133827959
The top method is called column subtraction. The bottom method is called chunking. Kids usually prefer to do chunking if you give them the option because they think it looks easier but column subtraction is actually easier and is better practice for development of mathematical abilities.

Source: Used to be a maths teacher

>>133831833
Depends on the diversity of the kids.

>>133829768
the capability of niggers has never stopped kikes from lowering the bar for everyone else

I just wish they'd stop pretending that calculators aren't universally available in our time period. They should ingrain practical applications of math into kids' heads so that they always know how to calculate, and not spend so much time on long division that's useless knowledge with modern technology. They should be able to pull out their phones and figure out how much weight a bridge can hold, or how much furniture they can fit in a room from an earlier age.

>>133831866
Every single fucking day you dolt. Mathematical skills are transferable, that's why maths is taught in schools, not because everyone is going to use trig after they're finished with school.

>>133831866
You should use the BLM flag nigger.

>>133831906

BINGO! Some cuck said lefty psychologists. Lets be honest and call them what they really are. KIKES!

>>133832036
such things can easily require calculus. You cannot teach calculus to elementary school students, since that in itself requires algebra, which requires adding subbing

>>133828826
Pyccкий дpyг, пeй мeньшe вoдки.

>>133832036
I graduated highschool 6 years ago and never saw long division once, I don't think they teach it at all anymore

>>133831668
325-38
323-40 (+4)
283 + 4
287

>>133832036
They don't pretend you can't use a calculator. You're taught to do stuff without a calculator so you understand what the principles behind the operations you put into the calculator are. It's easy for you to say that now because you understand the basic operators, so you don't waste your time working stuff out, but you don't remember how you learnt to do that without a calculator and why being able to do that is relevant.

I did a BSc in Mathematics and I used to say this shit too, then I trained to be a teacher and realised why it's wrong.

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>>133828107
>American education
this is what niggers and shitskins in your genepool will do to you

>>133829870
I do 325-25-13

>>133832083

Yet you can't name me one thing you use it for?

What math do you use that is more advanced than simple math every day?

>>133831866
yo nigga, you ain't gonna get far in the drug business if you don't know how to add or subtract, or weight shit on a scale. How would you know if the customer paid you the right amount if you can't do something as add two bills? Your boss would shoot yo nigga ass if you can't count to potato

No wonder Ameriburgers are so stupid, your teachers made you that way.

>>133828826
>I have a degree in mathematics and ive spent the last 15 minutes trying to figure out how this works and I dont get it
no you don't have a degree. you should figure this out in a few seconds

>>133828976
Welcome to NewMath. I actually think it's designed to dumb us down. I had to help my nephew with this and at one point I understood it. It's full in retarded and extra complicated and confusing but what's more is I couldn't understand how it might be building a more solid foundation for mental math.

>>133828826
You get the answer in retardedly small chunks that you have to add up Igor.

>>133832293
I use it to analyze electrical circuits, use it when programming, use it when performing simulations, use it when going to the groceries and checking if the faggot gave me enough change, use it when I'm trying to build something and want to know the area, use it when trying to figure out how long it would take to go to work while driving at 30km/h. Just becuse you fucking niggers don't use math, it doesnt mean its useless.

Next time you go on a drive-by, make sure to count how many bullets you shot, that way, you won't get caught with an empty mag.

>>133832218
So, the short explanation for this whole mess is that they have created a way to solve mathematical problems without mixing addition and subtraction in the same equation? "Counting Up" is just a method to add your way out of a subtraction problem? Jesus, how stupid do they think children are?

>>133832293
Anything in STEM faggot. How's being unemployed because a robot/beaner took your job working out for you?

>>133832469
Not until the rename subtraction "unaddition"

>>133832324

The media the left. They have one common denominator which infests the nation and the world mind you.

>>133832293
You don't realise how the maths you learnt shaped your mind and enabled you to access didn't ways of thinking. I actually use advanced maths every day because of my job and my personal research but even for laypeople, the techniques you developed when you learned calculus, for example, broadened your mind. You don't actually use calculus directly, but there's no way to replicate the broad array of techniques you develop by learning mathematical discipline as a whole. By learning the basics of maths you open up lots of potential avenues for a future career. I currently work in data analytics but there are literally hundreds of jobs I could take an entry position in because I have a maths degree.

>>133832491
>Next time you go on a drive-by, make sure to count how many bullets you shot, that way, you won't get caught with an empty mag.

I laffed. Fuck that American.

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>>133832576
kek

>>133831866
>When's the last time you actually needed to do math
says someone with no money

>>133828544
The new who designed common core math said it takes away the advantage that white kids get from having parents that can help them with math homework.

>>133832576
Criminally Under-Rated Post

>>133832617
Different ways of thinking*

>>133832702

The kike agenda never ends aye?

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Here goes a common core problem i haven't seen here. This """"math minor"""" couldn't figure it out, so let's give it a crack.

>>133832491
>>133832575

Exactly. Job specific. I'm a ducking engineer. I need math. But at the end of the day I don't use algebra and calculus. And if and when I do its just going through a formula. Nothing you need years and years of bullshit for.

>>133832617

Again. Job specific.

And I think most kids would be better served by taking a class in IQ test style puzzles etc. Basic maths yeah. But after they got that down teaching them abstract thought and pattern recognition is better than trig

>>133832617
This. Math is for brains what gym is for muscles.

>>133832807
That is absolute fucking insanity. I heard about common core while I was a teacher but never looked into it. I am genuinely shocked by that. What the fuck are these madmen thinking?

>>133832899
Somehow, leftists found a way to make maths marxist.

>>133832852
Taking IQ tests won't improve understanding of anything other than how to take IQ tests. We teach trig because it is practical, it gives kids abstract thought and pattern recognition while also teaching them something that is potentially useful. Please just stop talking about things you don't understand.

>>133832807
>let's give it a crack
Let's give whoever came up with it a crack over the ear.

>>133832702

Funny thing is my parents never helped me ever. If anything my parents along with the left agenda (kikes) have held me back significantly. I am also very resentful and angry because of it.

>>133832576
Kek....but isn't out of the realm of possibility

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When is Trump getting rid of commiecore?

>>133832995

>>you are a fool if you disagree with me

Solid argument there.

>>133832852
>I'm a ducking engineer.
You're a ducking retard is what you are mate. You can only be an engineer because of the maths you were taught, but I highly doubt you know anything about engineering. You probably didn't finish HS.
Typical phone poster.

>>133832936
It's fucking disgusting. I think it's been rejected in England for the most part, nobody was clamouring to use it and most of the senior maths teachers that I talked to seemed to be aware of it.

>>133832807
Lol, I use this method in my head all the time. The point is to convert the numbers into easily addable ones. Those are usually multiple of 2s 5s or 10s.

Assuming you have 12+18, you can take the 2 and add it to the 18 to get 10 + 20, which gives 30.

This is an easy example, but the same can be done with 33+97, which is a bit less obvious. The same method can be used, you take the 3 and add it to 97 to get 100+30, which gives 130.

They are just trying to teach niggers how to do mental calculations, because apparently they don't have the mental capacity to come with shortcuts for adding numbers together.

The reason why it is so hard to grasp for a lot of people, including me, is because it's something that our brain does almost automatically, which we don't pay attention to.

The problem though, is that teaching this kind of shit is useless, because different people will have different methods to do mental calculations, and using one method over another might advantage one kid over the other. Furthermore, this method does not give a general process to calculate anything.

As soon as you have fractions, decimal numbers or even negative numbers, that method goes down the shitter without significantly modifying it

>>133833058
Why not go all the way.
Two birds with one stone.
Get rid of the niggers and therefore the need for common core is gone + the crime rates would drop drastically.

>>133833091

I see. You cannot defend you position so you resort to personal attacks. The sign if a true genius.

>>133832807
I mean it may seem a bit convoluted but it definitely makes sense.

>>133832899
The problem is that the methodology isn't that bad (get the 26 to be 30 and take that amount off the other number, so it works out), but the way they explain it is terrible.

26 + 17 = ?
(26 + 4) + (17-4)
30+13
= 43

They should have explained it as "taking 4 from the 17 and giving it to the 26" or some shit

>>133827959

lol. Also known as they are too stupid to do subtraction in their heads so lets teach them a way that uses addition, because come on, no one is that stupid to not know how to do addition, right, right?

The method works, but... it defeats the point of education, education exists to stimulate your brain and create the necessary connections in order to achieve higher thought, without proper education there is no Flynn effect, and you have IQ of 70-80's unable to do abstract thought. (The reason why Africa/middle east is stuck in the 70-80 IQ region)

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>>133833127
I think during the blair years, they tried using the column method for division instead of the box method. My mum was a volunteer tutor at the school and they told her off for teaching kids pic related.

>>133827959
This shit will slowly fall off as you reach higher levels in math right?

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>>133833210

Islam is a 70-80 IQ religion.

Prove me wrong!

Pro Tip You Can't

>>133832852
Nigga, I gave you day to day specifics. KYS.

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>>133833142
I just enjoy reading these people who can't understand it and claim they have a math degree.

>>133833082
You don't know what you are talking about, it's evident if you read your post then my reply. I don't need to say anything else to you.

>>133833178
No, it is really bad on every level. You're looking at this as someone who understands the basics and is able to conceptualise the problem in different ways. It's fine for me and you to think of the problem like that, but it's not fine for a kid who doesn't yet know how to subtract a number from another number. You can't say things like 'just make the 26 into 30' with kids that have never encountered subtraction with double-digit numbers before.

Learning mathematics is a long and arduous process, most of us do it for well over a decade in school. It's impossible for you to just reduce everything you did in that time into such simple ways of thinking.

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>>133828107
Maths made easy for the low IQ nignogs because muh equality

>>133833165
I fucked your mother, that's how much of a genius I am, now kys

>>133833142
I'm quite similar to you and I'm left conflicted on a lot of this. A lot of these examples I'm seeing are essentially just a weird way to write out the way that I had naturally come up with to make these calculations when I was very young.

I think it WOULD be helpful to get more kids into that kind of thought process, but forcing them into it by procedure is almost certainly not the way to do it. I doubt I would have become as good at it as I had if I were forced to write out a similar, but not exactly congruent method in exactly one way instead of coming up with it on my own like I did.

Maybe someone different can give input into this. Someone who didn't naturally come up with things like this. How do you think you could have learned to do these types of things?

>>133827959
Doesn't matter. You can't fix Obama's kids. They're all commie and shit.

>>133833306
I only ever used the method in your pic while I was teaching, nobody did anything else to my knowledge.

>>133833402
Commoncore brought in true equality, it made americans equally stupid.

>>133833511
Agreed

>>133827959
Kek. Meanwhile in gookland:

https://www.youtube.com/watch?v=Px_hvzYS3_Y

Am I just banned from sp? Just checking

Also, this is (((their))) work

>>133833387

Its hard to take the scenic route. When you are on a time schedule. It would be illogical and against what you know works best. Literally against what YOU KNOW WORKS BEST! I don't hate on parents who don't even bother to learn a retards method. They are for retards.

>>133833387
Can people really not get it if they actually try? I know it looks weird but it's really not difficult.

Pretty easy to see that Jack just forgot to go back 10 after he did the 100's and before he did the 1's. Do people really not get this if they actually try to figure it out?

>>133833549
That's cool man :)

Mods are fair gods

>>133827959

but why? it just makes it long winded, and lets be honest if someone can fuck up something like 32-12, then splitting it into loads of little additions instead creates more steps to fuck up.

If you absolutely have to split it up, why not just do -

32-2 = 30

30-10 = 20

It's half the steps for the right answer, the only time I actually think it's easier to even split shit up is doing large multiples in your head with no calculator, like 56 x 73 in my head I'll do

56 * 10 = 560
560 * 7 = 3920
56 * 3 = 168
3920 + 168 = 4088

but other than that, why bother?

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>>133832576
>Not until the rename subtraction "unaddition"

>>133833165
>He's an (((engineer)))
>Who doesn't use algebra
>And posts on a phone
Stop lying like a tard and maybe people would talk to you like an adult, don't fall back on the "hurp you are mean to me so that means I win" argument, it's about as stupid as you. If you were actually smart enough to have earned an engineering degree at even the lowest tier community college you'd probably know that. You'd probably also know that algebra and calculus are used for any engineering job, only bullshit (((engineers))) (read:ditch diggers) "puts things into a formula".

But if you really want a proper argument, I use trig everyday I go for a hike to navigate. Trigonometry is the basis of navigation, although I would understand if a burger doesn't know about walking anywhere but through a Mc Donalds, so I guess that doesn't apply to you.

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>>133832702

>>133827959
the "new" way is teaching you how to do it in your head vs doing it on paper you fucking retards.

The fact that Americans can't even understand elementary math lessons and think they are a jewish plot tell you pretty much everything you need to know about the country.

>>133833387
kek, common core teaches you how to think instead of how to think for yourself. That is why its such a fail

The new way is adjusted for female thinking.

>>133833804
You need to learn how to do it on paper before you'll be able to do it in your head.

>>133827959
>The quality of education given to the lower class must be of the poorest sort, so that the moat of ignorance isolating the inferior class from the superior class is and remains incomprehensible to the inferior class. With such an initial handicap, even bright lower class individuals have little if any hope of extricating themselves from their assigned lot in life. This form of slavery is essential to maintain some measure of social order, peace, and tranquillity for the ruling upper class.

----Silent Weapons for Quiet Wars

>>133828544
No advantage
They are trying to make white kids as stupid as blacks by making everyone fail math.

>>133833804
>the "new" way is teaching you how to do it in your head vs doing it on paper you fucking retards.

but everyone I know uses the same way as on paper.

Who in their right mind, would use several steps in where you have to keep track of multiple numbers.

>>133833306
What the fuck is "the column method"?

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>>133828966
>WHY THE FUCK DO YOU HAVE TO OVERCOMPLICATE SOMETHING THAT'S PERFECTLY MANAGABLE IN THE FIRST PLACE?!

Because we have to pretend that these things are human and that they can be educated. The strategy is a combination of lowering standards and dumbing down those who are smarter than an ape.

>>133828107
am I the only one who thinks this is actually a good algorithm for mental math?

>>133832807
What? In my head I just break it like this:

20 + 10 = 30
then
6+7 = 13

30+13 = 43.

Even that is better than whatever this arbitrary bullshit is.

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>>133827959
what the actual fuck

>>133833943
>You need to learn how to do it on paper before you'll be able to do it in your head.
Right, the addition method here is teaching you the steps necessary to do it mentally.

Try lining up two large numbers, subtracting, carrying the remainder and summing in your head. It doesn't work because it requires to many short term memory slots.

Adding up from the smaller to the larger works because you can keep discarding the previous numbers as you go and so you only need to keep 3 numbers in short term memory at any time.

Bottom line, this is a good thing to teach and people who don't understand are retards.

>>133827959
My girlfriend is a 3rd grade teacher and in Massachusetts who went to Brown, shes never heard of this

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>>133828544
>>133832702
>>133833975

>>133834227
You'll never be able to teach someone a way to think. The only way a student is going to be successful with mental math is if they develop it on their own.

>>133834227
You don't teach someone the steps to do it mentally. Everyone has their own way to do it, which they come by themselves. This is teaching niggers how to do it mentally, because they are borderline retards who can't come up with it by themselves. There are many ways to do math mentally, teahing one method over the other is wrong on so many levels. For starters it disadvantages people who do it in a different manner, it prevents them from getting outside help, since most people didn't learn math using such bullshit, and by far the worst part of this method is that it teaches how to think instead of teaching how to think for yourself. What happens when you are in a situation where you haven't been thought how to think? You're fucked.

>>133833804
The fuck? Why would you mentally round numbers to the nearest 5 or 10 when subtracting, we have a base 10 system, there's only 100 combinations of 1 digit - 1 digit pairs, and they're all easy as fuck.

This teaches children to not build up a really fucking basic building block of doing mental math, as well as use addition as a crutch instead of actually learning how to subtract, mentally or on paper.

Fuck this gay earth

>>133829835
Good post

>>133828966
>>133833402

This is about learning how to do this shit without pen and paper in your head, it makes a lot more sense when the numbers are a lot bigger, it's just splitting it up to 10s or 5s which are easy for the mind to focus on and not lose your mental place.

Still retarded though

>>133829870
>>133831370
nah you do it like this:

325-38
38-25
30-25 = 5
38-30 = 8
5+8 = 5+5+3 = 13
300-13
290,280,10-3,287

>>133831866
If you don't know the basics of math, then you will always be at the mercy of those that programmed the calculator.

If the calculator gives you a result of 151-60=56 how would you know that is wrong unless you knew basic math?

There are a lot of things outside of our direct control. But training our minds to calculate basic math is not one of them.

>>133834354
>and by far the worst part of this method is that it teaches how to think instead of teaching how to think for yourself.


>Implying thats not the goal

>>133828107
This is so fucking retarded. It may be good for literal retards, but its actually more complicated. Stop with the "hurrr they are just kids! they can't learn all of that" bullshit. 32-12 is fucking 20. What's hard about that? I leaned to do the "old way" in like 30 minutes. It's simple as fuck.

>>133834145
It is, provided you have no short-term memory or understanding of subtraction. It is machine learning given a human touch and taught to idiots.

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>>133834354
>because they are retards
>borderline

I can't even wrap my head around the new method and I'm pretty okay at math. It's stupid and inefficient and it confuses me as to why I would do it that way instead of just taking the 2 off and then taking the 10 off. I don't even have to stop to think for most math but this common core shit stumps me when I try to do it.

>Make up Common Core and other bullshit to get niggers through high school and college
>They'll fail anyway
>Common Core will also fuck up anyone who was taught the old way
God bless (((them)))

>>133834481
Okay but take a moment and actually break down what you're doing in your head to come to that answer.

I'm not saying the example shown is the optimal way to do it, but you're not just memorizing the answer to 32-12, you have a process to calculate it, conscious or not.

>>133828826
>>133828826
>>133828826
>I have a degree in mathematics
show me a russian who doesnt

>>133834346
>You'll never be able to teach someone a way to think
Wrong. The brain learns most things by conditioning (repetition) and this is a very simple algorithm that will be easily learned by most people simply by repeating it.

The only problem with this approach is that once someone has been conditioned to execute the algorithm they may only apply it in limited circumstances (like on a math test) and may lack the ability to generalize it to novel circumstances.

>>133834710
W-who are (((((((they)))))))

>>133834869
>and may lack the ability to generalize it to novel circumstances.

Which shows exactly that they're not actually learning how to think that way. They're learning how to regurgitate an algorithm they were forced to do hundreds of times.

If they were to come up with their own algorithm organically, they WOULD be generalizing it to novel circumstances because it was THEM that developed it.

redpill: common core is a way to make the white kids perform worse so they score more in line with the rest of the diverse, modern classroom

>>133835128
No shit.
One of the writers of it literally admitted he did it to end White privilege

>>133834783
It is indeed similar to mental calculation. But I think the "new way" takes too much time to make a simple subtraction. Mental and "paper" subtraction shouldn't be equal. On paper you have to right it all down.

>>133828107
>Progressive math
When can we start culling these people?

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>>133835128
This is true, and admitted by the fine upstanding (((gentleman))) who helped develop it.

>>133832702

My parents actually never helped me with homework.

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>>133828107

>show new method of math
>use simple examples

No shit, did you want them to teach it starting with complicated examples?

Finding the area of a triangle with an integral is great for learning integrals, but there's always that faggot who goes WHY DONT I JUST USE BASE TIMES HEIGHT OVER 2?

>>133835457
ok. the point is to remove the advantageous capability of white parents

>>133834795
I don't.
Gonna get a history one.

And I'm one-eighth Jewish. So either Jewish intelligence is a myth or I'd be more retarded if pure-blood Russian.

>>133835931
Kek.

>>133835050
>come up with their own algorithm organically
That is not what we are talking about here though. What we are talking about it whether it is better to teach children algorithm A or algorithm B.

Algorithm A:

1) line up 2 numbers
2) Subtract first number from bottom row from first number on top row. Place result in result row 1 position 1. Place remainder above top row position two (remainder position 1)
3) Repeat step 2 for each number in top row with the first number in bottom row, adding the remainder from the prior step to the result for each, creating new result and remainder entries for each.
4) cross out all remainder entries from previous step to limit confusion
5) repeat steps 2,3,4 for each number in bottom row creating new remainder and result rows for each.
6) sum result rows

Algorithm B:

1) Starting with smaller number round it up to the nearest 10, 50, 100 or larger even number and store the difference.
2) Repeat step 1 replacing the starting number with the rounded up number from the previous step and summing the difference until you reach the larger number.

You tell me which algorithm is superior genius.

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>>133827959
Kids have no chance once they reach college and everyone does math the old way.

>>133836378
>everyone does math the old way
with a calculator or computer you mean?

>>133828107
This seems useful if you're doing arithmetic in your head.

>>133836444
>calculator or computer
>calculator
>or
>computer


>a computer or a computer

Famous Democratic Party intelligence.

>>133836288
You don't teach children algorithms. Each one of them come up with their own algorithm to solve something. You teach them how something works and the main principles and theoris and then let them figure it out how to solve it. Forcing one algorithm on a kid, when he has a better one or one that he's more comfortable with is not good for learning. It's literally like forcing someone with a computer to install windows vista, even though he prefers to use windows xp. Ultimately, you need an operating system that must do a set of things. From there on out, whether you choose vista, xp, 7 or even linux/mac, is on you. You don't need to force something on someone, when there are other possible options.

>>133828043
Does he cut his own hair in front of a mirror?

>>133832792
https://www.youtube.com/watch?v=LQ8Nr3_2724

Welcome to /pol/, enjoy your stay.

>>133827959
>>133828107
What the fuck? This is the most retarded method i've ever seen in my whole life. It's very confusing and takes more to resolve with it. No wonder burgers are retarded

>>133836288
Algorithm A because it is more efficient on paper. Who are you to say which is easier for a student to do in their own head?

>>133834354
It's called "learned helplessness".

>>133829896

Thank you for that abhorrent post, you are an honorary Canadian

>>133828270
>>subtracting with pen and pencil
Sad state of American public education.

>>133836552
>You don't teach children algorithms
That is a nice pedagogic ideal but in reality yes you do.

They taught children Algorithm A before and now they teach them Algorithm B, which is clearly superior.

>>133828544
It's supposed to get kids thinking about numbers in a more concrete way, gets them comfortable with these abstractions.

In reality it over-complicates the simply things. The simplest solutions to problems are always the best.

Every few years 'education reformers' come out with a new curriculum or teaching method or some other kind of snake oil that will supposedly close the education gap between Blacks and Hispanics to Whites and Asians. This never goes anywhere. I think this may actually close the racial achievement gap by sabotaging the White and Asian students.

>>133837356
What he means by "algorithm" is really "mental method." The argument is you can't explicitly teach methods for mental math by requiring them to be done on paper.

>Algorithm B, which is clearly superior
If you actually knew fuck all about algorithms, you wouldn't make a statement like this. Different algorithms are more optimal in certain situations. You can't say that one is necessarily superior to another.

>>133836885
>Algorithm A because it is more efficient on paper
False, A is an inherently more complex and inferior algorithm irregardless of where you do it.

Secondly, doing math on paper has little practical value while fast mental math skills can be used all the time on the job, shopping, etc.

>>133827959

You know the old fashioned way was the "new math" in the 60s that adults laughed to as well

But turns around it was an actually good system

You just need to grow up with it.

Here

https://www.youtube.com/watch?v=W6OaYPVueW4

>>133837753
>A is inherently more complex and inferior algorithm irregardless of where you do it
What the fuck are you basing this on?

>doing math on paper has little practical value
Except for maybe learning/teaching? Or math that is too complex to be done mentally?

>fast mental math skills can be used all the time
I agree. I'm not saying it's bad to be able to do mental math. I'm saying this is the wrong way to get students to do it for themselves.

I guess the way i do in my head is similar but i dont fucking go to adding like an autist i just subtract by each figure so if 1000-437
-400
-30
-7
=563

File: 27f.png (252KB, 680x603px) Image search: [Google]

252KB, 680x603px

>>133832702
>common core math said it takes away the advantage that white kids get from having parents that can help them with math homework.
For math, the end always justifies the means, so a parent can teach their children the proper way, regardless, and they'll stay ahead of the curve. What Common Core is actually doing is making the niglets more retarded while more functioning children will stay ahead, because they have parents/tutors/common sense to have them maintain a high standard. A gap is growing, as a result, and children will fall behind (mostly innercity rats, so I don't really care)

Common Core isn't ending "White Privilege", it's making it exclusive

This seems like such an illogical way to abstract the problem. It's almost as if you need to already understand that the difference is 20 before you can go about writing those extra lines for the 'new method'.

32 - 12
= 30 - 10
= 20

is all that needs to be taught, anything else is absurd.

>>133834145
it's much easier to just go 38-25=13, 300-13=287

>>133828107
WHWRE THE FUCK DOES THE 25 COME FROM

>>133834783
the process for 32-12 should be 3-1=2 and 2-2=0

>>133827959
What

>>133828107
thats exactly how I do it in my head