一、利用多媒体教学能体现形象、直观的效果,容易突破难点荀子早已提出:“不闻不若闻之,闻之不若见之。”可见,闻见是教学的基础,借助多媒体教学能有效地化抽象为具体,把难于教学的内容,用多媒体展现出来,调动学生的视觉功能,通过直观、形象、生动的感官刺激让学生最大限度地发挥潜能,在有限的时间里,全方位感知更多的信息,提高教学效率,激活学生思维。如在讲:“探究凸透镜成像及规律”内容 First, the use of multimedia teaching can reflect the image, the intuitive effect, easy to break the difficult Xunzi has long been proposed: “If you do not smell if you smell it, see if you see it. ” Visible, smell is the basis of teaching, with multimedia teaching Can effectively abstract as concrete, the difficult to teach the content, with multimedia to mobilize the visual function of students, through intuitive, vivid sensory stimulation so that students maximize their potential, in a limited time, the full range Perceive more information, improve teaching efficiency and activate students’ thinking. As saying: “exploration of convex lens imaging and law ” content