What's 8+5?

[Arcadio]

The Common Core standards are meant to reduce the ignorance that the people who are against the Common Core exhibit.

 

[WaTaGuMp]

If your calculator has an equals button you're doing it wrong.

The + and the = button are one in the same, its an old school Casio.

 

[alkemyst]

At my university they were recruiting undergrads aggressively to teach at the local community colleges and maybe a high school or two. Math, physics, chemistry, biology, astronomy, and engineering graduates. Starting pay was in the mid $20k range. Not even enough to cover the bills. This was before the economy tanked too so 6 figure jibs were not that hard to get. Maybe not starting but after your first year definitely.

I tutor math occasionally and one of the more interesting parts for me is how differently people calculate the same problems. There can be six different ways to get to the same answer. With that said I'm fine with the methodology above (not the op obviously).

wwybywb?

 

[momeNt]

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.

Maybe my brain is broken, but for your example I did the following.

42-57 = -15 + 100 = 85.... really in my head it goes 15 left over after getting to 100...

Should I seek help?