我区于1987年春开始编写《复式小学自读课本》,1988年秋季开始在全区十二个县的23个乡镇进行实验.在确定实验乡的同时,选择了经济发展、交通条件、师资水平、教学设施、学生来源等诸方面条件大体相同的23个乡镇作为对比乡.实验采用自然状态下进行的方式,不作任何控制,不选择学校和教师,也不进行过多的指导和培训,还允许教师正常调动.这种实验方式有其不够严密的缺陷,但能真实地反映出山区复式 In the spring of 1987, our district began to compile “Passive Primary School Self-Reading Textbooks.” In the fall of 1988, experiments began in 23 townships in 12 counties of the entire region. In determining the experimental townships, we chose economic development, traffic conditions, and teacher qualifications. There are 23 townships with similar conditions in terms of teaching facilities, student sources, etc. as comparison townships. Experiments are conducted in a natural state, without any control, no choice of schools and teachers, and without excessive guidance and training. Allowing teachers to move normally. This experimental approach has its own shortcomings that are not tight enough, but it can truly reflect the complex in the mountains.