These creative little wooden blocks are great fun for children and adults of all ages. The blocks are rainbow colored and fit together or stack up in a number of ways. They are a wooden cylinder design that is a form between spheres and squares. Your little builder will learn colors, shapes and sizes as their imagination and coordination unfolds. There are play cards that have been developed to go with the blocks. A twelve-card deck that includes eleven pattern cards and an instructional guide card is included. Each play card has an image that represents a possible configuration of the blocks. They are designed for different levels of complexity. The cards are also multilingual and appear in French, German, Italian and Spanish. Fredrick W. Froebel, originator of the kindergarten system, influenced the design of these blocks. It is a wonderful educational product that will have lasting value.