Not about group theory per se, but a nice illustration of some translations, rotations and reflections applied to 2D shapes, which have group-theoretic descriptions (that we can learn about in some other book).
(I'm the author)
I've really been struggling with how to frame it! It has group theory concepts but is really about symmetry and other parts of math. I'm looking for ideas of how to talk about it and frame it -- please share your thoughts!