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学生解题错误的原因,大致有以下几个方面。1.题目内容读错一些学生由于粗心大意,往往把题目中的一些关键词句错读或漏读,导致解题错误。例如,“8台拖拉机4小时耕地128亩,现有土地240亩,要6小时耕完,需要增加这样的拖拉机多少台?”读题时漏掉“增加”二字,结果算式错列成240÷(128÷4÷8×6)=10(台)。又如,“大小两圆半径之比为3:2,大圆和小圆周长之比为( ):( );小圆和大圆面积之比为( ):( )”。由于习惯性意识,将后半题
Students solve the problem of error, there are roughly the following aspects. 1. Title content read some students due to carelessness, often the title of some key words wrong reading or missing, leading to problem-solving errors. For example, “Eight tractors have 128 acres of cultivated land in four hours and 240 acres of existing land. After six hours of cultivation, how many tractors need to be increased?” The word “increase” ÷ (128 ÷ 4 ÷ 8 × 6) = 10 (Taiwan). Another example, “the ratio of the size of the two circles is 3: 2, the ratio of the big circle to the small circle is (): (); the ratio of the small circle to the big circle is () ”. Due to habitual awareness, will be the second half