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课外实践作业是教师密切结合课本所学知识布置给学生的课外生物科技小实验、小制作,由学生利用闲暇时间独立完成的一项动手实践作业。布置课外实践作业具体操作如下: 第一,开学初,对全体学生进行动员,每班指定3名动手能力较强的学生成立中心组,1人推选为组长,其他学生自愿参加（随着时间的推移,课外实践作业吸引了越来越多的学生参与）。 第二,由教师结合教材内容,根据季节气候的变化、材料的可取性,每两周布置一次。逢双周五由各班中心组小组长领取课外实践作业的指导材料分发给每位组员。 第三,要求学生利用闲暇时间收集、购买材料并进行操作。 第四,在学生完成过程中或之后,及时进行询问指导,检查评比展览,以巩固效果。 例如:“第八章第一节细菌、真菌、病毒”上
Extra-curricular practice is a hands-on practice that students use the extracurricular bio-technology experiments and small-scale productions that students arrange in close connection with the knowledge learned in textbooks. The specific operations of extracurricular practice assignments are as follows: First, at the beginning of the school year, all students were mobilized. Three students with more hands-on skills were assigned to set up a central group, one was selected as the leader, and other students voluntarily participated (over time). In the past, extracurricular practice has attracted more and more students to participate. Secondly, the teacher combines the content of the teaching materials and arranges it once every two weeks according to the changes of seasonal climate and the desirability of materials. On every Friday, instructional materials for extracurricular practice assignments by team leaders of each class are distributed to each team member. Third, students are required to use spare time to collect, purchase materials, and operate. Fourth, in the course of students’ completion or afterwards, they should promptly inquire and inspect the competitions and exhibitions to consolidate the results. For example: “Chapter VIII, Section I Bacteria, Fungi, Viruses”