论文部分内容阅读
在物理教学中,概念的引入方法是否恰当,直接影响到能否激发学生学习的兴趣,调动积极性,参与教学活动。本文结合自己的教学实践,谈谈引入物理概念的几种方法。一、实验法大多数物理概念,教学方法是通过实验演示,让学生透过现象,剖析揭示其本质,这样引入概念,学生易于进入教学情境,形成鲜明的印象,强化对概念的理解和记忆。例如,在引入弹力的概念时,先演示小车受拉伸或压缩弹簧的作用而运动,说明弹簧恢复形变时要对与它接触的物体产生力的作用;再演示弯曲的弹性钢片能将粉笔头推出去,总结出物体恢复形变时要对与它接触的物体产生力的作用,进而得出弹力概念。又如,在讲超重和失重概念时,让学生在弹簧秤下挂上钩码,
In physics teaching, whether the introduction of concepts is appropriate or not directly affects the ability to stimulate students’ interest in learning, mobilize enthusiasm, and participate in teaching activities. This article combines its own teaching practice, talk about the introduction of several physical concepts. First, the experimental method Most of the physical concepts, teaching methods are demonstrated through experiments, so that students through the phenomenon, analysis revealed its essence, so that the introduction of the concept, the students easily into the teaching situation, to form a clear impression, to strengthen the concept of understanding and memory. For example, in the introduction of the concept of elasticity, first demonstrate that the cart is moved by the action of a tensile or compressive spring, indicating that the spring will exert a force on the object that is in contact with it when it resumes deformation; and then demonstrating that the curved elastic steel sheet can chalk When the head is pushed out, it sums up the effect of the force on the object that comes into contact with it when it recovers its deformation, and then derives the concept of elasticity. For another example, when talking about the concepts of overweight and weightlessness, let students hang a hook under the spring balance.