other containers to keep the ice cold and frozen. observe the ice cube every 30 minutes and record the results. which item worked the best?
choose old crayons in three or four light or bright colors. peel off the paper and put the crayons into a zip-locking plastic bag. place the bag on the sidewalk and have the kids stomp on it or use a mallet to pound the crayons into small pieces. find a nice rock and place it into an aluminum pie tin. sprinkle it with the crayon pieces. put this in the hot sun so the crayon pieces will melt onto the rock. when the crayons finish melting 