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一、带着问题反思,促自主提高在教学过程中,我尽量引导学生进行探索,自己推论,给学生讲得尽量少些,而引导他们发现得应该尽量多些。因此,学生在问题解决的过程中,总是先自己分析题目的条件和问题,反思两个条件之间可以直接求出所需的关键问题。有这样一道题:某件商品滞销,只好降价出售。如打八折,就要亏150元;如打九折,可获利100元,这件商品进价()元。学生1:设原价为x元,80%x+150=90%x-100,0.1x=250,x=2500,进价为2500×80%+150=2150(元)。学生2:(150+100)÷(90%-80%)=2500(元),2500×90%-100=2150
I. Reflect with questions and promote self-improvement During the teaching process, I try my best to guide students to explore and deduce their own reasoning to make students as little as possible and guide them to discover that they should try their best. Therefore, students in the process of problem solving, always first analyze the conditions and problems of the problem, reflect the two conditions can be directly obtained from the key issues needed. There is such a problem: a commodity unsalable, had to cut prices for sale. If you hit 20% discount, it will lose 150 yuan; such as playing 10% off, 100 yuan profit, this commodity purchase price () yuan. Student 1: Suppose the original price is x yuan, 80% x + 150 = 90% x-100, 0.1x = 250, x = 2500, purchase price is 2500 × 80% + 150 = 2150 yuan. Student 2: (150 + 100) ÷ (90% -80%) = 2500 ($), 2500 × 90% -100 = 2150