"Beautifully crafted and thoughtfully designed, Inchimals is a set of 12 wooden blocks which measure from 1 in height (the tiny ladybug) to 12 high (the towering giraffe). Combine the blocks with the 100 writeon / off math puzzles and youll soon discover that Inchimals are more than toys. Explore counting, number value and recognition, scale, fine motor skills, language and imagination." Write on-wipe off puzzle book features 100 problems to solve.