一、渗析实验统编高一化学课本第206页渗析的演示实验,在现行中学教材初次出现。我们开始演示,因全班五、六十人,教室前后距离大,很难保证每个同学都看得清楚。为了解决这个问题,我们作了一些改进,让两个同学一组,边讲边实验。 First, the dialysis experiment compiled senior high school chemistry textbook Page 206 dialysis demonstration experiment, the current secondary school textbooks first appeared. We started to demonstrate that it is difficult to ensure that every student can see clearly because of the distance between the classrooms of 60 and 60 people. In order to solve this problem, we made some improvements to let two students form a group and talk about experiments.