There is so much to discover in this set, even for the younger children who haven't learned the numbers and how to count. The motoric is awoken through building and stacking. Together with the counting blocks (Art. No 42100), the counting figures (03070), the Coulourful Bead Stair 10234, the Counting Stack Game 11061 and the 5 Math Friends 10582 there is a great way to learn through Grimm's rainbow numbers.