教学目标:(一)知识与技能第一,了解并掌握分运动与合运动的特征,并且充分理解运动的分解与合成中应当遵循的平行四边形定则。第二,了解并掌握平抛运动形成的条件和特点,并且知道平抛运动属于匀变速曲线运动,且加速度为g。(二)方法与过程 Teaching objectives: (A) knowledge and skills First, to understand and grasp the characteristics of sub-movement and co-movement, and fully understand the decomposition and synthesis of the movement should follow the parallelogram rules. Second, to understand and master the conditions and characteristics of the flat throwing movement, and know that the flat throwing movement belongs to the uniform speed curve movement, and the acceleration is g. (B) methods and processes