一、激发学生学习兴趣,提高学习效率高中生物学知识有许多涉及生物学的基本理论,其概念、原理、规律有着严密的逻辑体系。这些知识比较抽象,高度概括。如果教师仅凭讲述或挂图分析,学生学得枯燥、乏味,难以理解,不易接受。而学习兴趣是提高教学效果的重要条件,能调动学生学习的积极性。而多媒体所展示的图像、音响等,生动活泼,感染力强,对学生有强烈的吸引力,能激发辩趣,活跃思维,使学生人人参与,调动每位学生的积极性。从而创造实现生物教学的良性互动,创设教学情景和气氛,加深学生体验,使生物课上起来得心应手。生 First, stimulate students interest in learning and improve learning efficiency High school biology has many biological biology involved in the basic theory, the concept, principles, laws have a strict logic system. This knowledge is more abstract and highly summarized. If teachers simply tell or flip chart analysis, students learn boring, boring, difficult to understand, not easy to accept. The interest in learning is an important condition to improve teaching effectiveness, and can arouse the enthusiasm of students. The multimedia images, audio, etc., lively, infectious, strong appeal to students, can stimulate debate, active thinking, so that everyone involved in the student, to mobilize the enthusiasm of each student. Thus creating a virtuous interaction in biology teaching, creating teaching situations and atmosphere, deepening students’ experience and making biology lessons handy. Health