课程标准指出:教学活动必须建立在学生的认知发展水平和已有的知识经验基础之上。但在实际的备课或课堂教学中,多数教师却只关注学生已具有的知识基础,而忽视了学生基础经验这一重要而又鲜活的课程资源。案例描述:一节普通的研究课,《太阳》一课的导入。师:同学们,你们都知道关 Curriculum standards point out that teaching activities must be based on the level of cognitive development of students and the existing knowledge and experience. However, in the actual preparation lesson or classroom teaching, most teachers only focus on the knowledge base that students already have, while ignoring the important and fresh curriculum resources of students’ basic experience. Case Description: An ordinary research class, the introduction of “Sun” lesson. Teacher: Classmates, you all know it