Archive : 2004 : July : 3
symmetry
By Margaret
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I know it's too late now, but I have a really fun way of teaching symmetry and congruency with my second graders. I have collected a lot of cookie cutters, some of which are symmetrical and some not. I have a recipe for| "Play Clay" that I ask several mothers to make for me, and I have cut 1" dowels into 6" lengths. I give each child a piece of waxed paper, a handful of the clay, and a dowel. My children sit in groups of four, and I place a selection of cutters with each group. I let them "play" with their materials first to get that out of their systems, then we begin with cutting out shapes and exploring | |
to see if they are symmetrical, and therefore congruent if flipped and placed on one another. They DON'T forget!! :o)I also have a collection of mirrors and many pictures. I let them explore placing the mirrors on the pictures, etc. Another fun way for them.
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