在重庆市第三届小学科学优质课竞赛活动中,有两位教师分别执教了湘版《溶解》一课,由于教学设计和对教材的处理不一样,课堂教学效果截然不同。一、《溶解》案例一(一)情境设置孩子们,你们真是可爱。刚才,张××同学担心老师上课口渴,特地为老师端来了 In Chongqing City, the third elementary school science high-quality contest, there are two teachers were taught in the Xiang version of “dissolved” a lesson, because the teaching design and processing of teaching materials are not the same, the effect of classroom teaching is very different. First, the “dissolved” case one (a) set the situation children, you are really cute. Just now, Zhang × × students worried about the teacher thirsty class, specifically for the teacher to the end