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re: (Not Common Core)-- Why are they teaching math this way?
Posted on 2/9/15 at 12:53 pm to LNCHBOX
Posted on 2/9/15 at 12:53 pm to LNCHBOX
quote:
I don't think it is memorized.
You are completely wrong. They are taught to memorize it and then use it as a technique. Notice it was given as a technique in the first question. Not number line, or grouping, or sticks or tallies.....
quote:
I wouldn't know, I'm not being taught it.
That explains your commentary.
quote:
And even if it isn't, it gives a base to figure out more complex operations.
So you are fine memorizing doubles, 5's, 10's, doubles -1... what else is good memorization and that is bad memorization to you?
quote:
Of course 5+3 isn't complex to an adult. But adults aren't being taught this, now are they?
No, and amazingly we all know it is 8 without having to pull out a number line.
And you are missing a few questions - remind me again how these help with your question of 354x286? Since the ability to do these more complex calcs seems to be your basis, which of these techniques we discussed are building the skillset to answer 354*286?
Posted on 2/9/15 at 12:58 pm to igoringa
quote:
You are completely wrong. They are taught to memorize it and then use it as a technique. Notice it was given as a technique in the first question. Not number line, or grouping, or sticks or tallies.....
So you knwo for 100% fact that 5+5=10 wasn't taught before hand? Spiffy.
quote:
That explains your commentary.
I'd love to know how you connect those dots. I was taught the old way, and am an engineer. So you;d think if I was uninformed I'd lean against the new way of teaching stuff.
quote:
So you are fine memorizing doubles
I don't think it's memoizing. I'm assuming the kid learns why 5+5=10 the same way he will learn why 5+3=8. You call it memorizing, I call it application.
quote:
No, and amazingly we all know it is 8 without having to pull out a number line.
Congrats, the child will get there too.
quote:
And you are missing a few questions - remind me again how these help with your question of 354x286?
I never said they would. Why would they? The child is learning the basis of why the simple things are what they are so they can later do more complex things.
quote:
which of these techniques we discussed are building the skillset to answer 354*286?
None. Thank goodness I never claimed they would.
Posted on 2/9/15 at 1:02 pm to igoringa
quote:
You are completely wrong. They are taught to memorize it
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.
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