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将初中学生知识与高一教学要求对比,不难发现初中化学教师回避的结构问题、化合价实质、原子结构稳定性规律、元素化合物知识的薄弱就成了高中学习的拦路虎。如果教师在教学中忽视这一问题,尤其是普通中学,学生对高中化学学习将产生严重畏难情绪,使学生大面积分化提前,为后续学习带来较大阻力。为此,笔者采取了以下教学策略:
Comparing the knowledge of junior high school students with the teaching requirements of high school, it is not difficult to find that the structural problems avoided by junior middle school chemistry teachers, the nature of valence, the laws of stability of atomic structure, and the weak knowledge of elemental compounds have become a barrier for high school students. If teachers neglect this issue in teaching, especially in ordinary middle schools, students will have a serious fear of difficulty in chemistry learning in senior high schools, which will lead to the differentiation of students in large areas, which will bring greater resistance to follow-up study. For this reason, the author adopted the following teaching strategies: