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为了减轻教学中作业批改的负担,提高教师工作效率,加强数学作业处理的计划性,具有重要的意义。首先,要有对作业中可能发生错误的预测。这里大致可分为学生思维的特点和数学题目本身两方面来探讨。中学生的抽象思维能力还不够发达,往往易从现象上着跟,忽略知识实质的隐蔽性。例将式(b-a)C~(1/ 2) (a>b)中,根号外面的代数式移进根号里面去。错误解答(b-a)C~(1/2)=(b-a)~(2)c~(1/2)正确解答 ∵ a>6,故b
In order to reduce the burden of job-reading in teaching, improve the work efficiency of teachers, and strengthen the planning of mathematics operations, it is of great significance. First, there must be a prediction of possible errors in the job. This can be roughly divided into two aspects: student’s thinking characteristics and mathematics topics themselves. The abstract thinking ability of middle school students is still not well developed. It is often easy to follow the phenomenon and ignore the hidden nature of knowledge. For example, in equation (b-a) C~(1/2) (a>b), the algebraic equation outside the root number is moved into the root number. (b-a) C~(1/2)=(b-a)~(2)c~(1/2) Correct Solution ∵ a>6, so b