化微观为宏观,变抽象为具体——初中生物教学的实验创设初探

Changing from Micro-into Macro, from Abstract into Concrete——on Experimental Creation of the Junior High School in Biology Teaching

在生物教学尤其是有关人体和动物的教学中,有不少内容是微观性的,无法也不可能使用学习对象在课堂上进行宏观地实验和展示。在教学中,往往是通过抽象的概念和原理讲解来向学生传达相关知识的。对教材上没有设计实验,但在教学中又有必要和可能进行实验的,进行大胆地实验创设,尤其是把无法直接进行实验的一些内容通过使用替代性装置向学生进行具体直观地呈现,能使教学内容化微观为宏观,变抽象为具体,收到良好的教学效果。

Since quite a lot of contents own micro-character, which cannot be experimented and displayed in macro-methods in classroom teaching, in biology course, especially in teaching on human bodies and animals, abstract concepts and explanation of principles have been adopted in teaching students. This paper shows that good teaching effect can be received in teaching biology when changing the micro materials into macro ones and abstract points into concrete ones by experimental means of specific visual presentation creatively.