学习材料是学生解决数学问题、获得数学知识、提高数学能力的基本载体,是学生感受数学与生活的联系、体验数学价值的重要资源。但是在日常的课堂教学中,我们经常可以看到,有的教师不注意学习材料的选择,所用的学习材料的典型性、启发性不够,影响了学生知识的获得和能力的发展;有的教师尽管对教材提供的材料进行了重新处理或另外选择,但原有的教学目标却没有达成;还有的教师尽管选择了较合适的学习材料,但学习材 Learning material is a basic carrier for students to solve math problems, acquire math knowledge and improve their math ability. It is an important resource for students to experience the connection between math and life and experience the value of mathematics. However, in daily classroom teaching, we often can see that some teachers do not pay attention to the choice of learning materials, the typical learning materials used, not enough inspiration, affecting the acquisition of students’ knowledge and ability development; some teachers Although the materials provided by the textbooks have been reprocessed or otherwise selected, the original teaching objectives have not been met; while some teachers choose the more suitable learning materials, the learning materials