学生在知识、经验上的不足,对所学概念的理解不够透彻,在解题时就不能全面地考虑问题,往往是以偏概全,从而出现漏解.用勾股定理解直角三角形问题,或者判定三角形的形状方面,如果对问题考虑不全面,往往会出现漏解的情况.为避免和克服这种漏解的情形,解题时可采用分情况讨论.分情况讨论一般分为三个步骤:首先确定讨论的对象;然后根据讨论对象进行合理的分类;最后归纳讨论结果,综合得出结论.一、计算型 Students lack of knowledge and experience, not enough understanding of the concept of learning in the problem-solving can not fully consider the problem, often over-general, resulting in leakage solution.Using the Pythagorean Theorem to understand the right-angle triangle, Or to determine the shape of the triangle, if the problem is not considered incomplete, often there will be leakage of the situation.In order to avoid and overcome this situation of leakage, the problem-solving can be used to discuss the situation.Submission situation discussion is generally divided into three Steps: First, to determine the object of discussion; then reasonable classification according to the object of discussion; finally summarize the results of the discussion, concluded that a. Computational