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在对我省初中自然科学教材的第三册和第四册有关热学知识数学中,发现学生存在“二个误写”、“三个误解”和“三个关系”较难理解的问题需要突破。下面谈点教学中的体会和做法。 1“二个误写”——“熔”和“溶”,“汽”和“气”的误写 ①“熔”和“溶”的误写:在教到“熔点”时,总有不少学生将“熔化”的“熔”误写为“溶”。为此,我在教学时提出:为什么熔化的“熔”是“火”字旁,溶解的“溶”是“氵”字旁?让
In the mathematics knowledge about mathematics in the third and fourth volumes of junior middle school science textbooks in our province, it is found that students need to break through the problems of “two misunderstood”, “three misunderstandings” and “three relationships” that are difficult to understand. . Let’s talk about the experiences and practices in teaching. 1 “Two misunderstood” - misunderstood “melt” and “dissolve”, “gas” and “gas” 1 Misunderstanding of “melt” and “dissolve”: When teaching “melting point”, there is always no The students misunderstand the “melting” “melt” as “dissolved.” For this reason, when I was teaching, I asked why the melted “melting” is next to the word “fire,” and the dissolved “solution” is next to the word “氵”.