高中新课程改革正在如火如荼地进行,换了教材、减了课时,特别是教师多年来形成的知识体系和教学经验受到很大冲击,从事高中化学教学的教师面临着新的挑战。在以往多年的化学教学中,我们虽然积累了一些成功的经验,但为了应对现行高 The reform of high school new curriculum is being carried out in full swing, changing the teaching materials, reducing the class hours, especially the knowledge system and teaching experience formed by teachers over the years have been greatly affected. Teachers engaged in high school chemistry teaching are facing new challenges. In the past many years of chemistry teaching, although we have accumulated some successful experience, but in response to the current high