实验过程:初夏的傍晚,我独自来到郊外,为了感受一下大自然,也为了给学生找到观察对象。田埂、河畔,细细寻觅。那开着蓝花的婆婆针,那一团一团的紫薇花……还有那圆圆的开着金黄色小花的蒲公英,真惹人喜爱,一阵风吹来,毛茸茸的种子就飘飞起来……对!让 Experimental process: early summer evening, I came alone to the countryside, in order to feel the nature, but also to find students to observe. Tian 埂, riverside, looking carefully. That blue flowers mother-in-law needles, then the ball of a group of crape myrtle flower ... ... there is a round golden flower opening of the dandelion, really lovable, a gust of wind blowing, hairy seeds on the fly up ... ... yes! Let