在教与学中,人们经常提到“一杯水”与“一桶水”的问题.单摆是简谐运动中的重要内容,下面笔者以单摆教学为例谈谈教师应有怎样的“一桶水”.一、教师的这“一桶水”应广而杂我们从知识的广度上畅想一下与单摆有关的内容.一根不可伸长的不计质量的绳一端固定,另一端系一质点便形成一个理想的单摆(也叫数学摆). In teaching and learning, people often refer to the problem of “a glass of water” and “a bucket of water.” The pendulum is an important part of simple harmonic motion. What kind of “a bucket of water.” First, the teacher of this “a bucket of water ” should be wide and complex We imagine from the breadth of knowledge and pendulum-related content of a non-extensible quality Rope fixed at one end, the other end of a series of points will form an ideal single pendulum (also called mathematical swing).