Month: December 2010

Banished From the Math Classroom: “Don’t Ask Why….

“Don’t ask why, just invert and multiply”,  talk about an arcane procedure.   Maybe it’s just because I’m old, but I really can remember this being said in the math classroom.  I’m not sure teachers actually use the phrase anymore, and

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Banished From the Math Classroom

Some of the things that have been long accepted in the mathematics classroom, need to GO!  They do nothing to help a student understand mathematics from a conceptual viewpoint.  In this series, I will be talking about some of my

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Division Debate

I was just having a conversation with two sixth grade teachers this morning and the topic of long division came up.  We had been talking about multiplication and how it would help children if we said, “groups of” instead of

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