The story of rain阅读材料涉及到自然现象——降水的过程,此时也出现了单词rain,cloud,sun,vapour,stream等,还有句型It comes from the clouds.教师这样设计:(多媒体呈现下雨的情境,运动着的雨滴吸引了学生的注意力。)
T: What's this? What color is it? Ss...... T: Where does the rain come from? Ss: It comes from the sky. It comes from the cloud. (多媒体展示水蒸气上升聚结成云。) T: Where does the cloud come from? Ss...... 【问题】请根据以上三个案例的描述,先判断这三个教学案例活动是否合理,并进行分析,如有不合理之处,请给出建议。