Demonstration is one of the most intuitive teaching methods in kindergarten mathematics teaching. In mathematics teaching, teachers directly demonstrate objects or teaching AIDS and demonstrate operations, and directly present mathematical knowledge such as numbers or shapes in an intuitive form, so that children can obtain abstract mathematical knowledge through intuitive methods. Demonstration can cultivate children's observation ability and imagination ability, and demonstrate wizards and children of all ages. In the process of using demonstration method, we can use some vivid language to explain and explain, at the same time, we can also ask some enlightening questions to arouse children's thinking and exploration, so as to cultivate children's imagination, observation, comparison and judgment.

For example, when we guide children to understand the meaning of bisection in the math activity "interesting bisection" in large classes, we can take a square piece of paper and demonstrate it. First, fold the paper in half and divide it into two rectangles with the same size. We can guide children to observe how we divide a square into two equal rectangles while dividing equally. In addition, we can also guide children to observe for themselves whether the two rectangles divided by comparison method are completely equal. Then we can use the same method to demonstrate the bisection process of linear figures such as rectangle and circle to children, and finally make children understand the concept of bisection through observation and thinking on the basis of direct perception: divide a figure into two equal parts, that is, bisection.