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在高中物理教材“运动的合成与分解”一节中,采用玻璃管中小蜡块运动情况的实验,来演示物体运动的合成与分解。如果这个实验再借助多媒体动画的形式展现给学生,则能使学生很好地了解运动的合成与分解过程。然而,作为课堂演示的探究实验,教师在实际操作中会产生许多困难,如小蜡块在玻璃管中的匀速移动很难控制。另外,由于小蜡块在玻璃管中是直接上升的,因而对于中间运动过程的分析讲解还需要借助板画的形式来说明。
In the high school physics textbook, “Synthesis and Decomposition of Motion,” an experiment was conducted using the movement of small wax blocks in a glass tube to demonstrate the synthesis and decomposition of object motion. If the experiment is presented to students in the form of multimedia animations, students will be able to understand the process of synthesis and decomposition of the movement. However, as an inquiry experiment in the classroom demonstration, the teacher has many difficulties in practice. For example, the uniform movement of the small wax in the glass tube is difficult to control. In addition, the small wax block in the glass tube is directly up, so for the analysis of the middle of the movement process also need to use the form of board to illustrate.