The design of the stacking set is based on the concept of nature. Each wooden piece can be stacked to form different kinds of trees. Helps children learn about color variation and size.Parents can help children recognize the different shades and sizes and motivate them to pair according to size, which will help develop vision, intelligence and eye-hand coordination. This can be related to planting a real tree in the environment helping to realize the importance of nature or do other related activities together as a family, which will help develop good relationship in the family.