基于真实情境彰显学科价值*——初中 “化学与社会发展”复习课

在分析了“化学与社会发展”主题内容和教学现状的基础上,针对目前课堂教学中过分强调学科知识而淡化学科价值的渗透,过分注重知识体系的完整而忽视真实情境下利用学科知识解决问题,过分注重习题的反复操练而忽视化学实验的真实体验等值得关注和改进的问题,以“阳光动力2号”为主题情境,通过分析材料、能源和环境的过去和现在,畅想材料、能源和环境的未来,促进学生重构材料、能源、环保的知识体系,体悟化学学科的本体价值及对生活、社会和生命的价值。

Highlight Subject Value Based on Real Situation:Review Lesson of “Chemistry and Social Development”

On basis of analyzing the current content and situation of "chemistry and social development" course, problems deserve attention and modification in current classroom teaching are discovered. Specifically, the problems are overemphasis of subject knowledge, Integrity of knowledge system, repetition of exercises, but neglect of the permeation of subject value, usage of subject knowledge to solve problems in real situations, real experience of chemical experiment. With the aim to solve these problems, a review lesson is designed and conducted on the background of manufacturing new-energy vehicle "Sun energy No.2" and some derivative issues. The lesson reviews the history, current situation and future of material, energy and environment science and technology which promotes reconstruction of students’ knowledge system about material, energy, environmental science and comprehension of the noumenal value of chemistry associated with lives, society and life.