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九年义务教育初中生物实验六〔观察根毛和根尖的结构〕，是一个与教材紧密结合的重要实验。该实验主要是让学生通过观察认识很尖各部分的特点，使抽象的书本内容形象化，以便更好地理解和掌握。现经两年来的实践，我认为在试管中观察比在培养皿中观察效果好得多。方法是：先在
The nine-year compulsory education junior high school biology experiment 6 (observing the structure of the root hair and root tips) is an important experiment that is closely integrated with the teaching materials. This experiment is mainly to allow students to visualize the abstract book content by observing the characteristics of the very pointed parts so as to better understand and grasp. Now after two years of practice, I think that observation in a test tube is much better than observation in a petri dish. The method is: first