一、分散与集中相结合活动教材的大部分内容是社会教育和科学技术活动。以科技活动为主的教学,应充分体现学生为主体教学形式,充分放手让学生自己动脑、动手设计完成,教师只要在关键处稍作点拨、指导即可。例如,在“一株植物”一课的教学中,我先把学生分组分散在校园的各个花坛、草坪前,观察月季、菊花、梧桐、白杨树和各种各样的小草,使学生发现无论是树还是花草,都由根、茎、枝、叶、` First, the combination of decentralization and concentration Most of the contents of teaching materials are social education and science and technology activities. Teaching based on science and technology activities should fully embody the students as the main teaching form, give full play to students' own initiative, and the design of the hands-on design is complete. Teachers should give advice and guidance as long as the key points are available. For example, in the course of teaching “One Plant”, I first divided the students into clusters on the campus and in front of the lawn to observe the rose, chrysanthemum, sycamore, poplar and various grass so that the students found that Is the tree or the flowers, by the roots, stems, branches, leaves, `