There are tons of benefits to stacking toys! Hand-eye coordination by stacking the pieces on top of each other, your child is developing a connection between their arms, hands and fingers and being able to place the piece down. Problem solving skills, this one is multifaceted in that your child will learn the size of pieces that can go on top of each other, how smaller pieces are more stable when placed on larger pieces and also how to ensure their creation can get bigger. Cause and effect understanding, the ‘what happens if I do this’ question is so important for children to develop a sense of curiosity and experimentation. This question is one we should all be asking, no matter what our age.