The Isodraw application was designed to be a graphical manipulation program that lets geometry students create and manipulate line segments, angles, and polygons on the screen (both translations and rotations), and then also displays the effects of these movements over lines of reflection.

This should be fun for anyone who likes to experiment with movements and symmetries on the screen.

You can move polygons (left button drag), spin them (right button drag), and watch the reflections do what they will! A small list of conceptual challenges for students to try is given at the end of the instructions page embedded in the program along with a small glossary of relevant geometry terms they can study.

This would be appropriate for high school geometry students or any advanced elementary tinkerers.