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今年4月,笔者听了一节三年级科学优质课,内容为《科学》第六册第三单元“温度与水的变化——冰融化了”,课后对于授课教师采用酒精灯加热使冰快速融化来观察冰融化过程中的温度这一操作颇有感触。下面是执教者的教学片段:师:当我们吃冰块时,“嚓”的一声,一块冰块被我们咬到嘴?
In April of this year, the author listened to a third-grade scientific high-quality course titled “Changes in Temperature and Water - Melting Ice” in the third unit of Volume VI of Science. After class, teachers used alcohol lamps to heat ice Rapid melting to observe the temperature of the ice melting process is quite touching. The following is a coaching section of the instructor: Teacher: When we eat ice, “click” soon, an ice bite to our mouth?