median
don steward
mathematics teaching 10 ~ 16

Saturday, 11 February 2012

(a + b) squared

"I'm thinking of two numbers
I'll square each one of them first and then I'll add them
oh, no I won't, I'll add them first and then I'll square the result

do you think I will get the same answer?

I've done the same things,
square and add
add and square"

a powerpoint is here









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