这是一个网络上流传很广的笑话。教师的预设是想让学生明白树上的鸟都飞走了,可是在具体的教学过程中,学生并没有按教师设想的来答,而是不断地反问教师,最后教师只好晕倒。这虽然只是个笑话,但从中教师可以明白教学中预设和生成的关系。所谓“预设”,就是紧紧围绕教学目标、任 This is a very popular joke on the internet. The teacher’s precondition is to let the students know that the birds on the tree are flying away. However, during the specific teaching process, the students do not answer the teachers’ ideas. Instead, they constantly ask the teachers and the teachers finally fainted. Although this is just a joke, teachers can understand the default and generated relationships in teaching. The so-called “default” is to focus on teaching objectives, Ren