“绿色开花植物的几个科”,多年来在初中植物教学中,不太受人们重视.从北京市的情况看,一些教师在讲授这段内容时,常常采取“满堂灌”的方式.因此,教者感到枯燥,学者觉得乏味.为了打破这种局面,1984年上半年,我们在区、县生物教研员的大力支持下,就这个问题举办了一系列研究课.在已举办的研究课中,以北京九中黄惠生老师所讲的“十字花科”一节课较为突出.现将这节课的教学过程及我们对这节课的分析介绍如下. 教学过程概述复习提问 1.植物分类等级法所用的单位是什么?(在举手的若干名学生中,指定一名学生回答,回答正确.回答后,教师将“门、纲、目、科、属、种”竖写在副板书的位置上.) 2.双子叶植物纲的主要特征有哪些?(在举手的若干名学生中,指定一名学生回答,回答正确,教师予以肯定、表扬.) “Several subjects of green flowering plants” have not received much attention in the teaching of plants in junior high schools for many years.From the situation in Beijing, some teachers often adopt a “full house” approach when teaching this content, In order to break this kind of situation, in the first half of 1984, we held a series of research courses on this issue with the strong support of biological teaching and research staff in districts and counties. In the course of research that has been held , To Beijing nine in Huang Huisheng teacher said “Crucifixes” a lesson is more prominent now this lesson teaching process and our analysis of this lesson are as follows.Teaching process overview Review questions 1. Plant classification level What is the unit of law used for? (Among several students who raised their hands, one student was assigned to answer the question correctly, and after answering, the teacher wrote the title “Door, Gang, Head, Subject, Genus, Species” Position.) 2. What are the main characteristics of Dicotyledonae? (In the case of several students who raised their hands, a student was assigned to answer, and the answer was correct. The teacher affirmed and praised it.)