为了使学生掌握探索的过程,即根据现象进行推理,通过自己的或别人的实验,培养学生的学习能力,可采用探索法教学. 课题十字花科和蔷薇科. 目的掌握十字花科和蔷薇科的主要特征以及这两科植物的识别.同时培养学生实验的基本技能. 课前准备白菜、油菜、荠菜、桃、苹果、野蔷薇等植物的花及其带果实的枝;镊子、解剖针、放大镜、小刀、图表等. In order to make students master the process of exploration, that is, reasoning according to phenomena and cultivating students ’learning ability through their own experiments or others’ experiences, we can use exploration method to teach crucifers and Rosaceae.Objective To master cruciferae and Rosaceae The main characteristics and identification of these two families of plants.At the same time the basic skills of students experiment.Preparatory preparation of cabbage, rapeseed, shepherd’s purse, peach, apple, briar and other plant flowers and its branches with fruit; tweezers, dissecting needles, Magnifying glass, knife, chart and so on.