新课程背景下的高中化学教材立足于学生的素质教育,不仅立足于化学知识技能的基本教育,更着重于培养学生的学习技巧和创新思维,但在实际教学过程中,受应试教育的传统教学模式影响,教师往往侧重于理论知识的反复讲解和测试,对拓展型知识的重要性认识不够,认为这些拓展型知识影响了主要知识内容的授课时间,从而违背了新教材的改革本意.为此,本文对于在高中化学实际教学中拓展型知识的使用策略进行了探讨.一、拓展型知识对高中化学教学内容的预习辅助作用 Under the background of new curriculum, high school chemistry textbooks based on students ’quality education are not only based on the basic education of chemistry knowledge and skills, but also focus on cultivating students’ learning skills and innovative thinking. However, in the actual teaching process, the traditional teaching of examination-oriented education Mode influence, teachers tend to focus on repeated explanations and tests of theoretical knowledge, lack of understanding of the importance of extended knowledge, that these extended knowledge affect the teaching of the main content of knowledge, thus violating the original intention of the reform of new textbooks. To this end , This paper discusses the strategy of using extended knowledge in high school chemistry teaching.Explore the effect of extended knowledge on high school chemistry teaching content