Define and identify the three basic forms of symmetry translation, rotation, and glides with your class. They cut out and arrange paper pattern blocks to illustrate symmetry, create a Cartesian graph, and design a rug with a symmetrical...

Seventh graders create 3 original tessellation using polygons. They slide, turn, rotate and glide their designs on the computer. They print their tessellation on a T-shirt and teach the 6th graders about tessellations.

This site provides an image of M.C. Escher's famous lithograph, "House of Stairs," which can be enlarged by clicking on it. Included is a quote, which briefly explains how this piece of art introduces "[a] playful element" to "the...