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在许多物理公式中,“=-k”是学生比较难掌握的一个公式。学完了简谐振动,他们常不知道这个式子有啥用,因此对简谐振动的动力学问题往往一筹莫展。由于部编教材在“简谐振动”单元中增加了内容,提高了要求,使公式“=-”的教学更成为这一单元教学的一个关键问题。为此,我设计了如下的教法:就讲明=-的意义、加深学生对它的认识、初步掌握它的应用等三个方面来组织数学内容,并安排不同时间逐步完成有关教学意图。一、我在通过演示实验,让学生对简谐振动有了一个感性认识后,给出简谐振动的定义:“在跟
Among many physical formulas, “= - k” is a formula that students find it harder to master. After learning the simple harmonic vibration, they often do not know what the formula is. Therefore, the dynamics of simple harmonic vibration often can not do anything. Due to the fact that the teaching materials for editorial department added content to the harmonic vibration unit and raised the requirements, the teaching of the formula “= -” has become a key issue in the teaching of this unit. To this end, I have designed the following method: organizing the mathematics contents on three aspects: clarifying the meaning of the word, deepening the students' understanding of it, and initially grasping its application, and arranging the graduation of the teaching intention at different times. First, I passed the demonstration experiment, so that students have a perceptual knowledge of harmonic vibration, the definition of harmonic vibration is given: "In the