The Number Play features puzzle pieces of familiar objects - trains, pears, fish, bells, and more - that help teach youngsters what numbers represent. The Number Play puzzles help children learn counting, subtracting, adding, and number recognition. This is an effective tool for individuals with Autism as it is an interactive and tactile way to teach math skills. The Number puzzle frames are 5 3/4" long and made of durable crepe rubber. Included are 10 crepe rubber number puzzles, 55 crepe rubber counting objects, and an activity guide.