Teacher2Teacher |
Q&A #19512 |
From: Gail
(for Teacher2Teacher Service)
Date: Apr 18, 2008 at 21:26:09
Subject: Re: Fractions
Hi Blanca, I know for sure what I WOULDN'T do... I would not introduce them to the algorithm for finding this answer. Instead, I would start with a number like 12, represented by twelve candies, or 12 items of some sort. I would ask students to find "half" of that amount, and get them to talk about how they determined what "half" was. Then I would find a third, then a fourth, each time talking about their justification for the amounts. Meanwhile, I would keep a chart for the class, to record what they were finding. Since late second grade can be a time to think about multiplication facts, perhaps the students would "discover" something interesting in the data being collected... 1/2 of 12 is 6 1/3 of 12 is 4 1/4 of 12 is 3 Then I would test out their conjectures on other amounts, like 6, 18, 24... And I would only use unit fractions (those with numerators of 1). This would be an exploration for my students, a way to begin thinking about fractional parts of sets, rather than fractional parts of wholes. -Gail, for the T2T service
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