教材分析:《小车的运动》是四年级下册第三单元的第3课时。是学生在学习了《物体的运动方式》的基础上,对小车的运动展开具体的探究活动。在教学中,以学生喜爱的小车为话题,按照“问题——假设——验证——结论”的科学认知程序,对小车在斜面上的运动过程产生问题:“小车从斜面 Textbook analysis: “car movement” is the third grade of the fourth grade under the third unit hours. Students learn the “object of movement” based on the car's movement to start a specific exploration activities. In teaching, taking the car as a favorite topic for students and according to the scientific cognition procedure of “Problem - Hypothesis - Verification - Conclusion”, there arises a problem to the movement process of the car on the inclined plane: "The car moves from the inclined plane