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#CommonCore This is how the Government gets the unemployment rate.
What. The. Fuck. Is. This. Shit.
what “progressive” education in america is turning into.
THE FUCK’S THIS SHIT
what the hell is that supposed to even mean? I had to read over the explanation twice, and I’m taking algebra 2.
I think it’s supposed to be teaching kids that 8+5 and 10+3 are the same thing, but that’s not really phrased well?
I get so annoyed when people rip on Common Core with zero understanding of it. Does it never occur to people that there might be good reasons to teach math this way, and maybe they should learn a little more about it than what they get from a damn screenshot.
Common Core aims to teach the fundamentals of math conceptually rather than mechanically. We learned to memorize 8 + 5 = 13. Which, fine, you get the correct answer. But what a lot of really smart, dedicated people found was that when you teach fundamentals mechanically, the mechanics are the only thing students learn. Later, when you move on to teaching more complicated math, it’s harder for students to understand because they don’t see the underlying concepts as concepts; you only taught them to think of those things mechanically, to memorize. They can’t think creatively about higher math because you never taught them to really think about basic math at all — you only taught them to calculate.
The idea hinted at in the photo is that our brains are good at dealing with round numbers, which for people using a decimal system means powers of ten. Right, so you want to add 8 and 5. Well, 8 is just two less than ten, so grab two to make ten — 10, there it is, so satisfying — and what’s left? Three more? Easy: 10 + 3 = 13.
To people who learned by rote, that looks overcomplicated. That took two steps. Their way only takes one. They don’t even have to think about it — and that is exactly the problem. They don’t think about it; it’s just a thing they memorized. So consider what happens when you get to adding up larger numbers. Say you’ve got 8 + 5 down pat, and now you’re asked to add 58 and 75. Whoa whoa whoa. I’ve got to memorize that?? No, but you do have to learn a bunch of rules about borrowing and carrying. Someone who learned 8 + 5 by Common Core could intuitively realize that this is the same thing they already learned, only on the scale of hundreds instead of tens. Start at 58. Take two to get to 60. Then take 40 to get to 100. Then drop whatever is left over into those nice, juicy, empty zero-slots and you have your answer: 133.
To me, that just flat-out makes more sense than working it out the traditional way. Ask most people to do the latter problem and they’re either going to reach for a paper and pencil or they’re gonna give up immediately. Someone who learned the Common Core method can easily do it in their head.
Plus, remember, we’re gonna want these kids to know more than how to add numbers. Teaching math is about giving students tools and letting them practice until they are comfortable with those tools, then showing them how to apply them to something a little more complicated. To me, the Common Core way, thinking about the relationships between numbers, is just a way better tool than memorization — because memorization hits a brick wall almost immediately. If you learned to add single digits by memorization, you need an algorithm to go with what you memorized in order to add larger numbers. When if you had learned to think of addition conceptually, it’s obvious that still applies, it’s still useful, you don’t need anything new to do the slightly harder problem.
And that’s just applying these basics to… well, slightly less basic basics. Imagine you’d been taught arithmetic this way. Imagine you regarded numbers as things that could be broken apart, recombined, rearranged — in whatever way was most useful to the calculation you’re doing. Imagine that was your understanding of arithmetic when you were exposed to algebra. Algebra would have been so much easier! So much more relatable to what you already knew. Common Core is laying the foundation of algebra while they’re still teaching the rudiments of addition. Think about that. They are preparing kids who are in the first grade to better understand algebra, eventually. If you don’t think that’s a superior way to teach math get the fuck out of my face.
In conclusion, to people ripping on Common Core based on two seconds they spent getting angry at a screenshot: Shut the fuck up. Learn about a thing before you decide it’s worthless.