新《数学课程标准》指出:“数学活动经验的积累是提高学生数学素养的重要标志。”“数学活动经验需要在做的过程和思考的过程中积淀,是在数学学习活动过程中逐步积累的”。在教学中,教师要关注学生已有的活动经验,以少的时间、精力和物力投入,有效地完成教学任务,达成高效的教学目标。一、唤醒活动经验,创设有效情境数学情境的创设与学生的活动经 The new “Mathematics Curriculum Standard” states: “The accumulation of experience in mathematical activities is an important symbol of improving students’ mathematical literacy.” “The experience of mathematical activities needs to be accumulated in the process of doing and thinking. It is in the course of mathematics learning activities Gradually accumulated ”. In teaching, teachers should pay attention to students’ existing activities and experience, with less time, energy and material inputs, effectively complete the teaching tasks and achieve efficient teaching objectives. First, the awakening activity experience, the creation of an effective situation in the creation of mathematical situations and the activities of students