Willys Number Stacking Tower is a colorful stacking set comprising 10 wooden cubes of different sizes. They can be stacked on top of each other to make a tower, sorted, or lined up next to each other: The fun with numbers and quantities is different every time. Four game ideas for the cubes with lots of versions help with learning numbers and a feeling for quantities. The geometric puzzle shapes of the stacking tower also make it both educational and fun. Contents: 10 stacking cubes (4 sides printed, 1 side with geometric puzzle pieces), 1 bag, instructions.