在九年制义务教育《生物》教材动物部分和生理卫生部分中 ,分别讲述了家兔、狗和人体条件反射的形成和消失的原理。这是教学中的重点 ,也是难点。尽管书中举了一些例子 ,然而 ,学生难以观察、想象、理解条件反射的形成与消失的整个过程。所以 ,对学生来说 ,书上所举例子往往被 In the “animal” part of the nine-year compulsory education “biology” textbook, the animal part and the physiological health part describe the principles of the formation and disappearance of conditional reflexes in rabbits, dogs, and humans. This is a key and difficult point in teaching. Although there are some examples given in the book, however, it is difficult for students to observe, imagine, and understand the entire process of formation and disappearance of conditional reflexes. So, for students, the examples in the book are often