What's 8+5?

[OverVolt]

Jesus fuck, you're stupid.

8+5 is still 13 the "Common Core way." They just teach you different ways to get there.

I don't know where you're getting this 8 + 5 = 10 bullshit, but I've seen this picture making the rounds: http://youngcons.com/this-kid-sticks-it-to-common-core-big-time-when-he-answered-this-math-problem/

Children are taught that when you're adding 8 + 5, you can break it down to 8 + 2 = 10, and 10 + 3 = 13 (and obviously, 2 + 3 = 5). There are good reasons for doing this. 1. We have an easier time doing math with round numbers. 2. It demonstrates the relationship between different place values of numbers.

The old way of teaching math was rote memorization and recitation of procedures. The new way teaches kids to understand what's happening behind the scenes before teaching the most efficient way to do mathematical operations. These kids aren't going to do 8+5 this way for the rest of their life, they're being taught this way so they understand why 8+5=13.

"That's the stupidest thing I've ever heard" said every Teabagger everywhere.

Do this in your head: 142 - 57

Did you:
1. "Borrow" 1 from the 4 in 142, then subtract 7 from 12 and 5 from 13, placing the first result in the ones place and the second result in the tens place.
2. Add 42 + 43
3. 100 - (57 - 42)

If you picked 1, congratulations! You learned math exactly the way it has been taught for decades. It's kind of a stupid way to do math when you look at it though, isn't it?

If you picked 2, you did it the Common Core way. You probably weren't taught to do it that way, you just figured it out and realized how much easier it is than option 1.

If you picked 3, you've demonstrated an understanding of numbers that the Common Core tries to teach.

Math has always come easy to me. When I see people complaining about Common Core math on the Internet, it's usually stupid people following memorized procedures who have no understanding of math. I see the way math is being taught, and it's the way I've always understood math without being taught it. If these methods help kids understand math half as well as I did, they'll be kicking ass when they get to high school.

This might blow your mind, but most 4th grade math teachers are not exactly math people or else they'd have been engineers. So teaching the rote memorization way and letting students learn shortcuts on their own works here, instead of this Japanese cooperative crap. Its a totally different culture over there you can't just regulate good teachers into existence. Odds are you went to private school like me anyway which wasn't beholden to all this crap and just went ahead and taught good math skills.

 

[IronWing]

1. "Borrow" 1 from the 4 in 142, then subtract 7 from 12 and 5 from 13, placing the first result in the ones place and the second result in the tens place.
2. Add 42 + 43
3. 100 - (57 - 42)

I did it the Ironwing way. I subtracted 50 from 140 to get 90. Then I subtracted 2 from 7 to get 5 then subtracted 5 from 90.

 

[WaTaGuMp]

The answer is 13, now fuck off.

 

[IronWing]

The answer is 13, now fuck off.

In the other thread they got 27.

 

[mugs]

This might blow your mind, but most 4th grade math teachers are not exactly math people or else they'd have been engineers. So teaching the rote memorization way and letting students learn shortcuts on their own works here, instead of this Japanese cooperative crap. Its a totally different culture over there you can't just regulate good teachers into existence.

If 4th grade teacher can't teach 4th grade math, they need to be replaced by people who can. You don't need to regulate good teachers into existence, you only need to pay them well enough to attract qualified candidates.

They don't really need to be "math people" though. The methods that are being taught today still boil down to a set of procedures, but they're procedures that result in a better understanding of math.

Odds are you went to private school like me anyway which wasn't beholden to all this crap and just went ahead and taught excellent math skills.

I went to private school, but they didn't teach me much of anything. I got bored of Algebra 2 and asked if I could stop going to class. I spent the rest of the year playing Minesweeper in the library and occasionally showing up for a test. Nothing but As. Private schools are playing on easy mode. They get the children of parents who are willing and able to spend $7k+ per year per kid on private school. They brag about their high test scores, but those kids would do just as well in a public school.

 

[Ruptga]

Hang on, hang on. Are you saying that if we just offer attractive wages, qualified people will go into teaching instead of taking a job that they can live on? Crazy talk. Obviously teachers are just lazy, and we need to make more rules to keep them in line.

 

[OverVolt]

I went to private school, but they didn't teach me much of anything. I got bored of Algebra 2 and asked if I could stop going to class. I spent the rest of the year playing Minesweeper in the library and occasionally showing up for a test. Nothing but As. Private schools are playing on easy mode. They get the children of parents who are willing and able to spend $7k+ per year per kid on private school. They brag about their high test scores, but those kids would do just as well in a public school.

No the petty bullshit of public school can mindfuck you into lower grades.

:awe:

 

[sportage]

Smarty pants

 

[sdifox]

sounds like abacus math to me, except op is doing it wrong and conveniently blame it on Facebook.

 

[Hugo Drax]

Teaching pays shit. Your not going to find awesome teachers for the starting salaries they are offering.

And then to top it off, the bullshit burocracy they have to deal when teaching is now a mass produced product.

And finally you have to deal with parents who fight you any time you try to dicipline your special snowflake, undermining your authority.

And in African American neighborhoods, parents who don't really give a rats ass if the kid even shows up for school to begin with.

Yeah sign me up.

 

[edro]

Common core is fine and a good teaching tool.
Most people do common core anyway, they just don't know it.
It seems odd to do on small numbers, but it will actually help kids in the long run.

And you wonder why foreign students are so good at math...

 

[SunnyD]

He actually didn't get it right.

(Naer + Mayne / Incorruptible * Lemon Law) ^ Mammadore = Mai72

= Equivalence in reducible forms =

Naer + Mayne = Mai72

 

[Possessed Freak]

Can we talk about multiplication in grids vs old school multiplication? Or how about also including the stick method the Chinese use?

 

[WaTaGuMp]

! ! ! ! ! ! ! !

! ! ! ! !

Oh look, the top row has 8 exclamation points, the bottom row has 5. If you add them together, its STILL 13, fuck off. :awe:

 

[lxskllr]

Hang on, hang on. Are you saying that if we just offer attractive wages, qualified people will go into teaching instead of taking a job that they can live on? Crazy talk. Obviously teachers are just lazy, and we need to make more rules to keep them in line.

Teachers are paid pretty well. If someone gets into teaching expecting to get rich, they're in it for the wrong reasons.

 

[DrPizza]

Jesus Christ, you just dropped the collective IQ of anandtech by about 10 points.

HERE is the reason they give it to you that way.

If I give you two numbers, say 366 and 729, most people who do it in their head will do this:

300 + 700 = 1000
66+29 = 95

1000+95 = 1095.

Some people in their head may do it a step further, and say 60+20 = 80 and 9+6= 15, then add those together.

What they DON'T do in their head, is line them up and carry the ones, etc. So we teach kids to do math on paper by carrying the ones, etc, but people who do it in their head do it a whole lot faster and learn the tricks on how to add that way.

That's what common core is trying to teach.

While I may not agree with common core, there are a whole lot of jackasses like yourself spreading mis-information that's it become as bad as the fucking climate debate. People are choosing positions without even understanding it.

Go back to wherever you cam from, Mayne.

Like

 

[Exterous]

And in African American neighborhoods, parents who don't really give a rats ass if the kid even shows up for school to begin with.

This is hardly an african american only issue

Teachers are paid pretty well.

Considering that some states start as low as $30k for a position requiring a bachelor's degree which is below the average student loan debt for said 4 year degree I am not sure that qualifies as 'pretty well'. Granted it varies by state but benefits are being slashed like crazy too. I keep hearing about these amazing teacher benefits but my health benefits at my private sector job have been better than all three school districts my wife has worked at.

 

[lxskllr]

Considering that some states start as low as $30k for a position requiring a bachelor's degree which is below the average student loan debt for said 4 year degree I am not sure that qualifies as 'pretty well'. Granted it varies by state but benefits are being slashed like crazy too. I keep hearing about these amazing teacher benefits but my health benefits at my private sector job have been better than all three school districts my wife has worked at.

According to this site, average is about $43k overall...

http://www.payscale.com/research/US/All_K-12_Teachers/Salary

I consider that decent money if you like the work. There's other benefits/detriments, but I think they more or less equal out.

 

[Exterous]

According to this site, average is about $43k overall...

http://www.payscale.com/research/US/All_K-12_Teachers/Salary

I consider that decent money if you like the work. There's other benefits/detriments, but I think they more or less equal out.

Aren't sites like payscale and glassdoor based soley on self reported salaries? I think the NCES is a better judge which actually has it higher. Something to keep in mind is that many states require a Master's degree as well. Pretty low salary for someone with a masters

I also don't believe average salary tells the whole story as many of the older teachers are handled under different compensation rules than new hires which is partly masking the underlying structural shift in teacher compensation. If you look at teacher salary data there has been an acceleration in the downward shift so teachers now make less than they did in 1990 let alone 07, 08 and 09. Meanwhile the average age of teachers is increasing. There are 18 or so states where 50% or more of the teachers are >49 years old which is going to weight the 'average pay' on the high end.

 

[IGemini]

YOU FAILED

 

[TheVrolok]

I think you're doing it wrong ...

 

[waggy]

I'm against Common Core. But good god OP you a fucking idiot.

 

[BUTCH1]

I did it the Ironwing way. I subtracted 50 from 140 to get 90. Then I subtracted 2 from 7 to get 5 then subtracted 5 from 90.

I did it in a similar fashion, I borrowed the 50 to got 90 then just did 90-7 in my head and add back in the 2+=85

 

[Markbnj]

People are upset when their potato chips aren't round. Most people are clods.

Yes! This pisses me off. I want round potato chips. Aren't potatoes round in cross section? Damn right they are.

 

[KMFJD]

8+5=

If you said 13 you would be wrong!

Doing it the Common Core way...

8- you take away 3 to make it 5

Now, you can add 5+5= 10

So 8+5= 10, not 13

And you teach from time to time?