顾名思义,学具就是学生学习时使用的操作性材料。根据小学生的身心发展特点,在小学数学教学时教师需要引导学生通过动手操作和直观感知等活动获得数学知识,形成数学思想和方法。操作和观察的质量直接影响到学生数学学习的效果。因此,为学生提供操作与观察的直观感知材料,成为教师教学设计时的一个重要考虑内容。通常,教师在着手准备学生学习材料时往往会参考教材给出的素材,不加修改直接拿来使用;或者考虑到准备时间过长索性不提供学习材料,改由教师的操作活动取代学生的操作活动。以上做法均 As its name implies, learning tools are the operational materials used by students. According to the primary and secondary students’ physical and mental development characteristics, teachers in primary school mathematics teaching need to guide students through hands-on activities and intuitive perception and other activities to obtain mathematical knowledge, the formation of mathematical ideas and methods. The quality of operation and observation has a direct impact on the effectiveness of students’ math learning. Therefore, providing students with visual perception of operation and observation becomes an important consideration for teachers in teaching design. Normally, teachers often make reference to the materials given in the textbooks when preparing to prepare the students’ learning materials, or use the materials directly without modification or take the preparation time into consideration. They simply do not provide the learning materials and replace the students’ operations with the teachers’ activities activity. All of the above methods