Jim McNeill is the illustrator/animator of my "Dropping in on" series by
Crystal Productions. http://www.jimmcneill.com/
His tessellation demonstration video is exceptionally well made if you are
looking for a "how-to" resource. Included in the video are step-by-step
instructions for translations, rotations, and reflections. I've used this
video numerous times with kids and adults. Because you can stop, rewind, and
replay, it is particularly helpful.
Jim and I also wrote a book with these step-by-step instructions. It, too,
is available through Crystal Productions or Amazon.
http://crystalproductions.com/catalog/
For those of you who deal with animation in your classrooms, Jim also has a
Flash demo on his website.
If anyone is attending the AZ art ed assoc conference next month, Jim and I
will be presenting our newest video/book, "Dropping in on Grant Wood." We'll
have copies at the conference and Jim will autograph them for you.