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高一物理課“機械能”這一單元,由於教材內容的抽象性較强,教師和學生在教與學當中都容易感到困難。以下願就自己的工作經驗和與北京市幾位同志討論的結果提出幾点意見,供給教師同志們參考: 1 在介紹功的概念時,首先應使學生明確了解在物理學中為什麼要引入功這個概念。為此,應該連系學生已學過的知識,通過具體的實例向學生指出,在許多機械運動中,都因為媒質的阻力和摩擦力而使物體的機械運動减少(速度降低),同時出現了熱運動,這就是說,
Higher physics class “mechanical energy” of this unit, due to the abstraction of the teaching material content is strong, teachers and students are easy to feel difficult in teaching and learning. The following is willing to give some opinions on their own work experience and the results of discussions with several comrades in Beijing for the reference of teachers: 1 When introducing the concept of work, students should first understand clearly why they should be introduced in physics This concept. To this end, knowledge of what the student has learned should be linked to indicate to the student through concrete examples that in many mechanical motions the mechanical movement of the object is reduced (reduced in speed) due to the resistance and friction of the medium and at the same time Hot exercise, that is to say,