抛体演示器是可以自行制作的一种新型综合教具。它分为甲、乙两种型号。利用它可以演示上抛、平抛和斜抛运动。并能验证《全日制十年制中学高中物理上册》第三章第九、十、十一节的公式的正确性。利用乙型抛体演示器,在测定飞行时间方面,能精确到误差1～5%以 The projectile presenter is a new type of integrated teaching aids that can be made by oneself. It is divided into A, B two models. Use it to demonstrate on the throw, flat throw and oblique throwing exercise. And can verify the correctness of the formulas in the ninth, tenth and eleventh chapters of Chapter III of the “Full-time 10-year High School Physics.” The use of B type projectile demonstrator, in the determination of flight time, can be accurate to 1 to 5% error