Prepared the lesson hands on for the girls. I added another variable, which was not in my original book. One of the original materials called for 1 glass of water, but I decided to try 1 glass of hot water, 1 glass of cold water.
The one of the left is cold. The one one right is hot. Both were then sprayed with equal amounts of shaving cream and same drops of green food colouring.
Both yielded different results. So cool! The girls echoed.
The girls got down to business after their curiosity was satisfied.
The usual seat work was carried on as usual.