观察蚯蚓是初中生物教学的一个基础实验,该实验材料易得,操作容易,因此,实验开课率较高。对于该实验有几个小问题值得教师注意,如果这几个问题处理不好,将会影响实验效果。笔者通过多年探索,总结出观察蚯蚓实验的几点经验,供同行参考。一、选好采集蚯蚓的地点虽然渔具店有袋装的商品蚯蚓出售,但为了让学生了解蚯蚓的生活环境,笔者一般安排学生亲自到自然环境中采集蚯蚓。蚯蚓喜欢生活在潮湿、疏 Observation of earthworms is a basic experiment in junior high school biology teaching. The experimental materials are easy to obtain and easy to operate. Therefore, the experiment start rate is higher. There are a few minor issues worthy of the attention of the teacher for this experiment. If these problems are not handled well, it will affect the experimental results. Through years of exploration, I summed up the experience of observation of earthworms experiment for peer reference. First, the selection of the location of earthworms collected Although the fishing gear stores have bags of earthworms for sale, but in order to allow students to understand the living environment of earthworms, I generally arrange students to collect earthworms in person to the natural environment. Earthworms like to live in wet, sparse