帮助学生掌握基本概念,是教学的主要任务之一。任何一门科学,都包含着一系列基本的概念。不掌握这些概念,就无法掌握这门科学。概念是思惟的基本形式之一。人们正是在概念的基础上,并且运用概念,来进行判断和推理的。不掌握概念,人就无法进行抽象思惟。因此,学好概念,是学生学好科学知识、发展思惟能力的基础和前提, To help students master the basic concepts is one of the main tasks of teaching. Any one science contains a series of basic concepts. Without these concepts, we can not grasp this science. Concept is one of the basic forms of thinking. It is precisely on the basis of the concept, and the use of concepts to judge and reason. Without the concept, one can not abstract thinking. Therefore, to learn the concept of good is the basis and premise for students to learn scientific knowledge and develop their thinking ability,