论文部分内容阅读
从分步列式到综合列式解答应用题,是小学生学习数学的一次飞跃,也是教学的重点和难点。教学中普遍存在的问题是:学生不理解综合算式的意义,知其然而不知其所以然;学生不会把“式”看成“数”来分析,难以正确列出综合算式;过分依赖分步解答,不会直接列综合算式解答。针对上述问题,教学中应加强以下几点。一、注重分析算式结构,帮助学生理解算式意义教材把“混合运算”和“应用题”编在一个单元里。是由两者之间的内在联系所决定的。从列综合算式解答应用题的过程来看,学生是否理解算式的
From the step-by-step formula to the comprehensive formula to answer questions, is a leap in primary school mathematics learning, teaching is also the focus and difficulty. The common problems in teaching are: students do not understand the meaning of the comprehensive formula, know it but I do not know why; students will not be “type ” as “” to analyze, it is difficult to correctly set out a comprehensive formula; Depending on the step-by-step answer, no comprehensive answer is given. In response to the above problems, teaching should be strengthened in the following points. First, pay attention to the analysis of the formula structure, to help students understand the meaning of arithmetic textbooks to “mixed operation” and “application questions” compiled in a unit. It is determined by the internal connection between the two. From the column synthesis formula to answer the question of the process of application, the students understand the formula