Abstract
In a previous “Let's Do It!” (Arithmetic Teacher, February 1977) ways to use a square to help develop fraction concepts were suggested. This month we will take another look at that square. In fact, we will do more than look at it. We will “slide it,” “turn it,” and “flip it.” and create all so rts of geometric patterns. Beginning with a square partitioned into eight (then later, sixteen) congruent triangles. the activities that follow suggest ways for children to develop some basic ideas about congruence. symmetry, and geometric transformations (translation, rotation, reflection) while they enjoy many mathematical and artistic experiences and develop their problem solving abilities.
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