概念是一种思维形式。概念教学是培养学生分析问题能力的重要教学内容，概念又是思维工具，一切分析、推理、想象都要依据概念和运用概念。然而，概念是抽象的，往往在概念教学中都感到枯燥无味，这成为教学中的一大难题。要搞好概念教学，使学生既学得生动有趣，又理解深... Concept is a form of thinking. Conceptual teaching is an important teaching content for cultivating students’ ability to analyze problems. Concepts are also thinking tools. All analysis, reasoning, and imagination must be based on concepts and application concepts. However, the concept is abstract and often boring in concept teaching. This becomes a major problem in teaching. We must do a good job in teaching concepts so that students can learn both vividly and deeply...