Tesselation is the repetition of a geometric shape that fits together like a puzzle, without any gaps or overlaps. This is a fantastic project that explores symmetry and shape repetition, plus you get to introduce your little person the Escher.
Tesselation Project for Kids from Leap Frog also included a great tesselation template, added below.
Exploring maths in art must include M.C. Escher. Young children love puzzles and the idea of helping them create their own tesselation