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中学生物教学大纲中规定,在中学生物学教学中应加强直观教学。直观教学是生物教学中最重要的教学原则之一。几乎所有的生物课都离不开这个原则,这个原则贯彻执行的如何,直接影响到学生的学习兴趣及教学质量。我在近年的生物课教学中,除采用传统的直观教具(如挂图、模型等)进行直观教学外,还系统地运用了幻灯投影电教手段进行直观教学,收到了较好的教学效果。现就幻灯投影在教学中运用谈几点体会。 一、幻灯投影有利于突出教学重点,突破教学难点。
The biology syllabus for middle schools stipulates that intuition teaching should be strengthened in biology teaching in middle schools. Intuitive teaching is one of the most important teaching principles in biology teaching. Almost all biological courses cannot be separated from this principle. The implementation of this principle directly affects students’ interest in learning and the quality of teaching. In recent years, in addition to using traditional visual aids (such as wall charts and models) for intuitive teaching, I also systematically used slide projection audio-visual teaching methods to perform intuitive teaching and received good teaching results. Now I’ll talk about the use of slide projection in teaching. First, slide projection is conducive to highlight the focus of teaching, breaking the teaching difficulties.