一、要重视基础知识的理解和记忆基础知识包括三个方面的内容:即基本概念(定义),基本规律(定律)和基本方法。如:对于“凸透镜”一节的概念的理解,“透镜”就是可以让光“透”过的光学元件,所以是用玻璃等“透明”材料制成的。关于“凸透镜”“凹透镜”的定义则从透镜的形状和“凹、凸”两个字的形状上找相似点,而关于“焦点”则是利用凸透镜会聚太阳光可以把地面 First, we must pay attention to the basic knowledge of understanding and memory Basic knowledge includes three aspects: the basic concepts (definitions), basic laws (laws) and basic methods. Such as: for the “convex lens” section of the concept of understanding, “lens” is to allow light through the optical components, so it is made of glass and other “transparent” material. The definition of “convex lens” and “concave lens” looks for similarity from the shape of the lens and the shape of the word “concave, convex,” whereas the “focus” uses the convex lens to converge the sunlight. Can put the ground