入选理由:本案例中,教师以活动为载体,由学生自己搜集和整理信息,体现了学生习得的过程。在家庭装潢的发展过程中,居室污染已越来越受到关注。室内污染究竟是由哪些物质引起的?它们是怎样影响我们的健康的?如何有效地预防和消除居室污染? 这些与学生生活息息相关的化学知识具有一定的现实意义,能激起学生学习的兴趣。 Reasons for inclusion: In this case, teachers use activities as a carrier to collect and organize information by students themselves, which reflects the process of student acquisition. In the process of the development of home decorating, the pollution in the home has received more and more attention. What kind of substances are caused by indoor pollution? How do they affect our health? How can we effectively prevent and eliminate indoor pollution? These chemical knowledges that are closely related to students’ lives have certain practical significance and can arouse students’ interest in learning.