教师 :同学们 ,今天我们来上一节甜甜的活动课 .请看 ,这里摆着一缸清水、一瓶红糖 ,还有大大小小的一批玻璃杯 .当我将红糖放入水中时 ,就得出糖水 .糖水有浓度 ①,计算公式为浓度 =溶质溶液 .下面 ,我们以糖水浓度的生活常识为背景 ,设计了 5个活动 ,组成一个由浅入深、由表 Teacher: My classmates, today we come to a sweet activity class. Look, here is a bottle of clear water, a bottle of brown sugar, and a batch of glasses, large and small. When I put brown sugar into the water The sugar water has a concentration of 1. The calculation formula is concentration = solute solution. Below, we use the daily knowledge of sugar water concentration as the background, and design 5 activities, which consist of a shallow depth, and