Pika Pau LEARN FRACTIONS set, as well as all the Pika Pau toys, is made out of natural materials only. The kit contains of a board and 15 pieces. Playing with this toy, the child learns the relationship part- whole as well as how many equal pieces each whole consists of. This toy will help the child understand fractions in a very simple and fun way as well as encourage math logical thinking. Its simple design and visible wood structure brings a child closer to nature in a unique way.