1. Activity objective: Understand the relationship between the number of neighbors of 10-20 and that of 10-20; Know that all numbers have two adjacent numbers; Let children experience the fun of mathematics knowledge.
2. Preparation materials: You need to prepare digital cards, sticks, wall charts, etc.
3. Specific process: warm up first, you can use games, such as "find neighbors", let each child take a digital card in his hand, and then sing while walking. The teacher will randomly take out cards with different numbers and let the children walk next to this number. Once the teacher reads "Where is my neighbor", the children need to walk through the adjacent numbers where they are.