《常识》音像教材的投影片画面精美,既生动活泼又具体形象,富有趣味性,符合儿童心理特点。但是很多教师在使用投影教材时,往往只是以其生动的图象来吸引学生注意力,没有深一步挖掘投影片与文字教材的内在联系。我在教学中注意挖掘投影教材的内涵,抓住重、难点,使音像教材与文学教材紧密配合,变抽象为形象,为学生易接受。如第三册《生活在水里的动物》,重点是认识一些常见的水生动物,观察动物外形及运动方式。这一课课本中主要是三种水生动物的画图,学生看起来既不易感兴趣,又不易理解。投影教材是复合抽拉片。我先投影 “Common sense” audio-visual teaching materials projection screen beautiful, both lively and vivid images, full of fun, in line with the psychological characteristics of children. However, when using projection materials, many teachers tend to attract students’ attention with their vivid images without further digging the internal connection between the slide film and the textbook. In teaching I pay attention to digging the connotation of projection textbooks, seize the heavy and difficult to make the audio-visual teaching materials and textbooks in close cooperation with the abstract as the image, for students to accept. For example, Volume III, Animals Living in the Water, focuses on recognizing some common aquatic animals and observing animal appearance and movement patterns. The main textbook of this lesson is a drawing of three aquatic animals that students seem neither easy to understand nor easy to understand. Projection materials is compound drawing tablets. I first projection