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现行中等师范物理教材,杆秤是放在“物体一般平衡条件”后讲的,并在学生实验中安排了制作杆秤的活动。目的,显然是巩固“有关固定转动轴线物的平衡条件”的基础知识、培养学生自制教具的能力(高中教材一册49页也有类似习题)。在制作活动中根据师范学校的特点,为了发展学生智力,培养学生能力和兴趣爱好,我们编写了一个活动方案,指导学生去实践。内容有:一、杆秤作制活动的指导提纲。二、学生实际制作活动。三、把实验探索的问题上升到理论。
The current physics teaching materials for secondary normal schools and steelyards are placed after “objects are generally balanced conditions”, and activities for making steelyard scales are arranged in student experiments. The purpose is obviously to consolidate the basic knowledge of the “equilibrium condition of fixed-axis objects” and to develop the ability of students to produce self-made teaching aids (the same applies to the 49-page book of high school textbooks). In the production activities, according to the characteristics of normal schools, in order to develop students’ intelligence and develop students’ abilities and interests, we have prepared an activity program to guide students to practice. Contents include: 1. A guideline for the production of steelyard scales. Second, students actually produce activities. Third, the problem of experimental exploration is raised to theory.