现代心理学研究表明，由于小学生认知水平处于初级阶段，抽象思维发展得不充分，往往需要借助学具来增加知识的直观性。通过让学生看一看、摆一摆、数一数等实际操作活动，把学生的视听觉、触觉。运动觉等多种器官协同利用起来，强有力地促进。心理活动的内化，丰富学生的感知? Modern psychology research shows that as the level of primary school students' cognition is at an early stage, the abstract thinking is not developed sufficiently. Therefore, it is often necessary to increase the intuition of knowledge through learning tools. By allowing students to take a look at the practical activities such as posing, counting and counting, the students' visual and tactile perceptions are felt. Sports sense and other organs synergistic use, a strong promotion. Internalization of psychological activity, enrich the perception of students?