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Go To Gathering Evidence (Part 1)
Here Kevin shows that he has a way of thinking correctly about the volume--as adding the volumes of cross-sections. This strategy anticipates a very important idea of calculus. Discussions like this allow teachers to assess the development of student thinking and make informed decisions about future lessons.
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© 2000 - National Council of Teachers of Mathematics
This page URL: CD Version last updated: September 21, 2000 |