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新人教版将多余条件应用题从原来的第四册提到第二册,这一提教学难度凸显,学生错误率明显偏高,让一年级的数学教师叫苦不迭。顺利解答该类应用题必须具备以下几方面的能力:一是辨别取舍能力,一道应用题中多个已知条件必须很快判断出哪个是解答问题所必须具备的条件,哪个是无关的多余条件;二是分析能力,具备从问题到已知条件逆向分析推理能力;三是对常见事物的类目种属关系有初步的
The new teaching version of the application of the question will be redundant from the fourth volume mentioned in the second book, which mention the difficulty of teaching highlights the high error rate of students significantly, so that first-year math teachers complain endlessly. The answer to such questions must be able to: 1) identify the ability to choose, a number of known conditions in an application must quickly determine which is the necessary conditions to answer the question, which is unrelated to the extra conditions ; Second is the ability to analyze, with the ability to reverse the reasoning from the problem to the known conditions; third is the initial species