Pika Pau NUMBERS as well as all the Pika Pau toys, are made out of natural materials only. This kit contains 11 digits between 0 and 9. The numbers are light, without sharp edges and pleasant to touch. Playing with Pika Pau NUMBERS, besides learning the numbers, a child develops logical mathematical skills and visual perception. This toy is very useful for both younger children who are learning to recognize the numbers and school age children who use numbers for first steps in math. This toy helps children to feel the numbers, play with them, and thus see mathematics as a game as well. Their simple design and visible wood structure brings a child closer to nature in a unique way.