1, concrete thinking of images: In the process of mathematics learning, middle-class children mainly rely on concrete images and experiences, for example, through the participation of observation, touch, hearing and movement, they can understand mathematical concepts and form mathematical thinking.

2. Preliminary abstract thinking: Although the thinking of the children in the middle class is mainly concrete images, their thinking is gradually developing and they begin to contact some abstract mathematical concepts. I began to understand some simple mathematical concepts, such as numbers and shapes, and gradually established a complete mathematical system.

3. Curiosity: Middle-class children are curious about things and situations around them and like to explore and discover new mathematical concepts and problems.

4. Interest-driven: Middle school students' interest in mathematics learning usually comes from their curiosity and desire to explore. I like to learn math through games, stories and other activities, and I can master math knowledge in a relaxed and happy atmosphere.