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

will I get the same answer?

students try out several numbers for 'a' and 'b'
find the difference between them and look for a pattern

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