随着社会信息化进程的不断加快,以多媒体计算机和网络为代表的信息技术,越来越为课堂所用。在我们农村小学,多媒体计算机辅助教学力量还比较弱,而电视机、投影仪、录音机等亦能突破传统教学在时空上的限制,做到图文并茂,动静结合,又以较少的投入成了常用的电教设备。这些电教设备的运用,配合实物观察、动手操作等方法,有利于激发学生学习兴趣,突破难点,使知识、能力、兴趣融为一体,易于学生接受,提高教学效 With the accelerating process of social informatization, information technology represented by multimedia computers and networks is increasingly used in the classroom. In our rural primary schools, multimedia CAI is still relatively weak. Television sets, projectors, sound recorders and the like can also break through the limitations of time and space in traditional teaching so that they can be integrated with pictures and textures and have become less commonly used Audio-visual equipment. The use of these audio-visual equipment, with the physical observation, hands-on and other methods, is conducive to stimulating students’ interest in learning, breaking through difficulties, so that knowledge, ability, interest integration, easy for students to accept, improve teaching effectiveness