6With just seven simple geometric shapes, Tangrams Sticker Book provides hours of challenging fun for all ages. Each of the 75 puzzles requires you to arrange triangles, squares, and rhomboids in order to create the shape of an object such as an animal, human figure, or vehicle. Using the cardboard practice pieces, readers can figure out the solution before applying the sticker shapes to the page and then decorate the completed figure with more stickers for eyes, mouths, and tails. Simple in concept but challenging in practice, tangram puzzles are a unique way to exercise your brain.