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一、有效备课,巧设教学情境教材是众多学者、专家心血的结晶,是经过精挑细选、反复洗练的。教师必须给予重视,充分利用教材,进行教学设计。俗话说:“良好的开端是成功的一半。”如果我们能在备课阶段多动脑筋,使创设的教学情境具有针对性、趣味性、创造性,课堂教学中常会起到意想不到的效果。教师充分利用媒体资源,课前收集大量科技录像片,如:转基因技术、克隆人、病毒、艾滋病、试管婴儿、吸烟、吸毒的危害、
First, the effective preparation of lessons, skillfully set the teaching situation Textbook is the crystallization of many scholars, experts, is carefully selected, repeatedly washed. Teachers must pay attention to make full use of teaching materials for teaching design. As the saying goes: “Good start is half the battle. ” If we can use our brains during the lesson preparation stage to create a teaching situation that is purposeful, interesting and creative, classroom teaching often plays an unexpected effect. Teachers make full use of the media resources and collect a large number of science and technology videos before class, such as genetically modified technologies, human cloning, viruses, AIDS, test-tube babies, smoking and drug abuse hazards,