中学生学习动物学,不仅要获得知识,更重要的是培养学生研究探索的兴趣,从而获得发现问题、解决问题的能力。蚯蚓取材容易,生活条件简单,试验设计容易,效果显著,我们在这部分教材里作了一些改革的尝试。 (一)形态对蚯蚓的外形的观察是青少年最感兴趣的。要学生通过自己的探索,来发现蚯蚓身体的两端是有区别的。先引导他们思考“一般动物头和尾有什么不同?”(头部有眼、耳、鼻、口,感觉灵敏)然后要他们利用光线、声音、气味测试蚯蚓,看蚯蚓有没有这些感觉。 Secondary school students learn zoology, not only to obtain knowledge, more importantly, to cultivate students’ interest in research and exploration, in order to gain the ability to discover and solve problems. Earthworm easy to take, living conditions simple, easy to test design, the effect is significant, we have made some attempts in this part of the reform. (A) morphology The observation of the shape of earthworms is of greatest interest to young people. To students through their own exploration, to find the two ends of the earthworm body is different. First guide them to think, “What’s the difference between the animal’s head and the tail?” (Heads, ears, nose, mouth, sensitive) Then they were asked to test the earthworms by light, sound and smell to see if they had any of these feelings.