Exploring capacity such as playing in a sandbox with cups or bowls in the bathtub or playing with rice, beans or whatever you have are all math. We explored different sized containers and talked about which would hold the most water and put them in order (smallest to largest). We learned about capacity and practiced our estimating skills at the same time as we filled a container with cubes. We were asked “How many cubes do you think your container will hold?” and then “Check if you are right”.