现行高中物理课本很重视与实际问题的联系,直线运动一章后的第42页第5题以“龟兔赛跑”编拟的一道练习题,笔者把该实例应用到速度教学中有以下几点突出作用。 [原题]小李讲了一个龟兔赛跑的故事,按故事 The current high school physics textbook attaches great importance to the connection with practical problems. After the chapter on linear motion, the 5th question on page 42 is based on an exercise problem developed by “The Tortoise and Rabbit”. I applied this example to speed teaching with the following Some prominent role. [Original question] Li Xiao told the story of a tortoise race, according to the story