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【背景】化学方程式是学习化学反应的最重要、最基本的工具。该教学中要让学生了解化学方程式包含的意义,了解书写化学方程式要遵循的原则,初步学会化学方程式的书写和配平。如果教学中仍然沿袭过去一些教师在进行本内容的课堂教学时,逐条讲深讲透,把自己所知道的知识一字不漏地传给学生,使学生学得被动、枯燥,最后规规矩矩地得出结论,是有悖于新教学理念的。
【Background】 Chemical equations are the most important and basic tools for learning chemical reactions. In this teaching, students should understand the meaning contained in the chemical equation, understand the principles to be followed in writing the chemical equation, and initially learn to write and trim the chemical equation. If the teaching is still followed in the past when some teachers in the classroom content of this lesson, one by one to talk about the deep, the knowledge they know to pass to the students word to word, so that students learn passive, boring, and finally the rules To conclude, is contrary to the new teaching philosophy.