高中物理上册“平衡的种类和稳定”一节中,介绍了一个稳定平衡的生动例子——儿童玩的“不倒翁”。但有相当一部分的学生未见过。若能利用简易方法自制一只“不倒翁”,在课堂上边讲边演示,将有助于加深学生对所学知识的理解。 In the high school physics book “The Kind and Stability of Balance”, a lively example of a stable balance is introduced – the “tumbler” played by children. However, a considerable number of students have not seen it. If you can use a simple method to make a “tumbler” and demonstrate it in class, it will help deepen students’ understanding of what they have learned.