教学活动是师生积极参与、互动交往、共同发展的过程。教师要发挥主导作用,处理好讲授与学生自主学习的关系,引导学生独立思考、主动探索、合作交流,使学生理解和掌握基本的数学知识与技能、数学思想和方法,获得基本的数学活动经验。因此,以导促学,要有效结合多种学习方式, Teaching activities are the process of active participation, interaction and common development between teachers and students. Teachers should play a leading role, handle the relationship between teaching and students’ autonomous learning, guide students to think independently, take the initiative to explore, cooperate and exchange so that students can understand and master the basic maths knowledge and skills, mathematical ideas and methods, and gain basic experience in maths activities . Therefore, to promote learning, to effectively combine a variety of learning methods,