others short and fat. then show them how when filled with the same fluid amount of water, all the containers appear to have different amounts. this works great when you do this exercise ahead and then ask your child which of the containers has the “most” water in it. the starry-eyed situation happens when they are given an opportunity to measure out the water and they learn the concept of volume. another amazing magic trick here, fill a jar full of rocks and ask your child if it is “full” when they say “yes,” add some sand, when you ask again and they say “yes it is full” add some 