笔者的数年教学尝试表明，课外资料对生物教学的帮助表现在多方面，教师只要随时随地收集整理各种资料，精心设计安排，在课堂教学中抓住契机巧妙实施运用，会达到理想的教学效果。１课外资料可给课堂教学带来生机有些授课内容平淡乏味，很难唤起学生注意力，如果有了资料... The writer's years of teaching attempts show that the help of extracurricular materials in biological teaching is manifested in many aspects. Teachers can collect and sort out various kinds of information whenever and wherever possible, carefully design arrangements, and grasp the opportunity to cleverly implement and utilize the teaching in classroom so as to achieve ideal teaching effect. 1 Extracurricular information can bring vitality to classroom teaching Some lectures content dull, it is difficult to arouse the students' attention, if there is information ...