在初中《植物学》课本中,介绍了叶卷须和茎卷须,但对初一学生及一部分生物教师来说,是不甚了解的。虽然日常生活中观察到了一些茎叶的卷曲,而在课堂上,教师只能照本宣科,学生也只好死记硬背,没有引导学生去实地观察,激发学生的学习兴趣,因而课堂教学就事倍功半。 In the junior high school “botany” textbook, introduced the leaf tendrils and stem tendrils, but for first-year students and some biological teachers, is not very understanding. Although some curly leaves and stems were observed in daily life, teachers could only copy the texts and lectures in the classroom. They did not guide the students to observe on the spot and aroused students’ interest in learning. Therefore, classroom teaching was less effective.