Commentary: Fraction Puzzles

 

            There are three sets of activities here, using Fraction Factory Pieces, Pattern Blocks, and Cuisinaire Rods.  The Fraction Factory Pieces are all rectangles, they include fifths and tenths of the largest piece, which are cut in a different direction from the other fractions; these characteristics make for some interesting puzzles, especially when the unit is varied.  I first learned of these types of puzzles from Pat Willott; many others also use them to get students thinking about fractions. 

            I often start with Fraction Strips, a length model; then move to these puzzles, which include two area and one length model; and then move to Fraction Tiles, a group model.  This activity and the Fraction Tiles are great in that they really get students thinking, but it can be hard to pull the learning out so it will transfer to other contexts.  To address this issue, I’ve made a detailed solutions sheet for Fraction Puzzles, with extensions and other exercises, but I haven’t posted it, as I don’t want my students to see it prematurely (sorry).  8/05

 

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