This activity really gets the students engaged in learning about capapcity. Any kid is excited when you tell them they get to play in water. Students work together to estimate and measure quarts, pints, and cups to fill a gallon container. I tell the students that in math class our job is to prove our answers...so I tell them this is how we prove the Big G. After the students have estimated, measured, and gotten wet we draw the big G in order to record our findings. Such a great activity!