最近,学校正在组织青年教师评优课活动,我有幸听到了一位年轻老师的自然课,深有感触,写出来与大家共享。课堂上教师先让学生分小组做实验,观察各种物体(如橡皮泥、木头、塑料等)在水中的沉浮情况。然后问:你有什么办法让橡皮泥在水中浮起来呢?学生纷纷动手实验,有的把橡皮泥压 Recently, the school is organizing young teachers’ excellent class activities. I was fortunate enough to hear the natural class of a young teacher. I felt deeply and shared it with others. In class, the teacher first asked the students to experiment in groups and observe the ups and downs of various objects (such as plasticine, wood, plastic, etc.) in the water. Then ask: Do you have any way to let the plasticine floating in the water? Students have hands-on experiment, and some plasticine pressure