教学《植物与环境》(人教社自然课本第五册)时,有些老师感到难教.主要原因如下:教材中的实验,在一节课内看不出效果,难以说明问题,教师提前准备的材料(弯曲的豆苗、向水的胚根),有些学生不相信,认为“如果植物不是这样长的,人们可以把它变成这个样子.”好像老师在糊弄他们.由此可见,如果不做实验,让学生看书或单纯由老师讲得出结论,难以达到教学目的. When teaching “Plant and the Environment” (Course 6), some teachers find it difficult to teach. The main reasons are as follows: Experiments in textbooks do not show results in a class, and it is difficult to explain problems. Teachers prepare in advance. The material (curved bean sprouts, radicles toward the water), some students do not believe that “if the plants are not so long, people can turn it into this.” As if the teacher was fooling them. Seen accordingly, if Without experimenting, it is difficult for students to read books or simply draw conclusions from teachers.