Resources to supplement classroom instruction of transformations and reflection. Lesson pages offer definitions and examples of composition of transformations and glide reflections. A practice page has a nine-question quiz. There are...

This lesson focuses on wallpaper groups. While there are infinitely many possible patterns, they all have one of just 17 different symmetry groups. These are called the Wallpaper Groups. Every wallpaper group is defined by a combination...

Given a pair of figures in the coordinate plane, try to map one onto the other and determine whether they are congruent. Includes examples of glide reflections. Students receive immediate feedback and have the opportunity to try...