整合学生已有知识促进高中化学新知识体系的建构

Integrating Students’ Knowledge into Construction of New Knowledge System in Senior High School Chemistry Teaching

在判定学生与新知有关的已有知识基础上，根据学生已有知识与新知识的关系分别在新知学习的前、中、后等时间段呈现已有知识；根据已有知识和新知识的内容难度层次、能力要求的不同，对已有知识采用讲述式、问题式、习题式等不同方式引发学生思考、启迪学生思维、促进新知的构建。

On the basis of determining students＇ existing knowledge related to new knowledge, according to the relationship between the existing knowledge and new knowledge, the existing knowledge was presented by lecture, questions or exercises in the former, middle and later period of learning the new knowledge according to the difficulty and competence requirements of the existing knowledge and new knowledge, in order to lead students to think and promote the construction of new knowledge.