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re: (Not Common Core)-- Why are they teaching math this way?
Posted on 2/9/15 at 1:15 pm to GeauxTigerTM
Posted on 2/9/15 at 1:15 pm to GeauxTigerTM
quote:
Mine wasn't. They simply use doubles as an easy frame of reference, as most people intuitively do memorize those. At no point was he ever asked to memorize doubles.
So when yours was given questions like Q1 in the first post of this thread, what do his teacher mean by 'double facts'?
Both of mine were given complete units on visualizing but then completely memorizing double facts, 5 facts, and 10 facts. Then, as you say, those memorized facts become the framework for double -1 etc...
Posted on 2/9/15 at 1:16 pm to igoringa
quote:
So when yours was given questions like Q1 in the first post of this thread, what do his teacher mean by 'double facts'?
It is a fact double of 5 is 10. But that doesn't mean the kids aren't taught why. Is this really the argument you're making?
Posted on 2/9/15 at 1:28 pm to igoringa
quote:
So when yours was given questions like Q1 in the first post of this thread, what do his teacher mean by 'double facts'?
It meant this...
quote:
They simply use doubles as an easy frame of reference, as most people intuitively do memorize those. At no point was he ever asked to memorize doubles.
quote:
Both of mine were given complete units on visualizing but then completely memorizing double facts, 5 facts, and 10 facts. Then, as you say, those memorized facts become the framework for double -1 etc...
Mine were not...which was my point. Everyone is/was not being taught to memorize these.
He learned to count by 5's and 10, but I wouldn't call it memorization.
This is actually one of those things which makes sense intuitively to me. If you already, likely, know that 8+8=16 than quickly pulling that 8+9=17 because 8+8=16+1=17 makes perfect sense. Doesn't it? Or are you advocating memorizing every addition fact from 1+1 to...I'm not sure what?
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