I am doing a maternity leave for a class and I have to teach capacity and volume. I showed them Gallon Guy and a chart with the different measurements on it but they seem to be lost. They have no concept of ounces being so small, and gallons being large when they are converting. Does anyone have any tips on how to teach this so they are not so confused? I also demonstrated pouring 4 cups of water into a quart container so they could visualize that but I still got that deer in the headlights look.