一、创设情景,激发学生学习兴趣与积极性初中生活泼好动,自制力较差,上课能集中精力的时间不长,容易开小差,但他们普遍好奇、求新、善于模仿,表现欲和参与意识较强。他们往往根据对这一学科的有趣程度来决定学还是不学。针对初中生的这些特点,集图像、视频、声音等多种方式于一体的多媒体技术,能创造出具有新颖性、丰富性、趣味性、感 First, the creation of scenarios to stimulate student interest and enthusiasm for learning Junior high school students lively, self-control is poor, the class can concentrate time is not long, easy to open, but they are generally curious, novelty, good at imitation, performance and desire to participate in awareness Strong. They tend to decide whether to learn or not, based on the degree of interest in the subject. According to these characteristics of junior high school students, multimedia technology integrating many ways such as image, video and sound can create novelty, richness, interest, feeling