在讲授高中《生物》(甲种本)“世代交替”这一内容时,我采用联系大自然,把学生带出教室,到大自然的环境中进行大、小课堂相结合的方式开展教学活动,收到了较好效果. 课堂上我先把什么叫做无性世代,什么叫做有性世代和世代交替等三个基本概念讲解清楚.由于学生对蕨类植物、苔藓植物的感性知识比较少,所 When I was teaching high school “Biology” (a type of scripture) “Generation Alternation”, I used a connection with nature to bring students out of the classroom and conduct teaching activities in a combination of large and small classrooms in the natural environment. Received better results. In the classroom, I first talk about what is called asexual generation, what is called sexual generation and alternation of the three basic concepts. Because students have less knowledge of ferns and bryophytes,