Symmetry and Tessellations

The author of "Investigating Patterns: Symmetry and Tessellations" offers dozens of activities in learning symmetry that correspond to her book.  Some of the areas explored are symmetry in the alphabet, inversions, faces, flags, quilts, rotation symmetry in hubcaps, tangrams, geometry and kirigami, shmuzzle puzzles and, of course, tessellations.  Try Activity 2, Photo Activity for Symmetry (in faces) -- what fun!