1, stacking and arrangement: children will start piling wood when they are about 3 years old. He/she will pile up some simple objects, but they actually belong to mathematical models and are related to some simple mathematical concepts. For example, two square building blocks with the same size and shape are juxtaposed to form a larger rectangle.

2. Playing with building blocks is a way to cultivate children's fine motor skills and explore concepts, such as introducing mathematics, geometry, learning to solve problems and clarifying causality. They must first understand the characteristics of building blocks, such as size, weight, shape and stability. Then they will start to build cities with roads and bridges with building blocks.

3, bridging connection: children can put two blocks on the ground, add a third block on it, and cross the two blocks in front, just like a bridge. Doing so can help children understand balance, symmetry and combination.