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许多老师在教第五册16课《彩虹》(浙江版)这一课时,会让学生按照课本的方法去做彩虹游戏,由于受到以下三个因素的制约,造成这个实验成功率很低:(1)学生口中含水少;(2)喷出的水珠粗而不均匀;(3)喷洒时间短。我在实验中进行了如下的改进:①由口喷改成喷
Many teachers are teaching Lesson 5 “Rainbow” (Zhejiang version) in Lesson 5, which will allow students to follow the textbook method to do rainbow games. Due to the following three factors, the success rate of this experiment is very low: 1) Less water in students' mouth; (2) Coarse and uneven spray of water droplets; (3) Spraying time is short. I made the following improvements in the experiment: ① changed from mouth spray to spray