Ice Boat Race
How we did it:
- sticky notes
Design your own boat flags by decorating sticky notes and taping them to a straw (cut to length).
Fill containers with water and put them in the freezer. Shallow containers (left) were easier to freeze and easier to blow toward the finish line. After a few hours, when the ice is slushy or partly frozen on the top, stick the straw flags into the container. Let them freeze the rest of the way.
After the water is completely frozen, put the bottom of the container under running water to loosen the ice boats. Put them in a baby pool, bath tub, or sand table filled with water for a race.
On your mark. Get set. Go! Blow the sails with a straw and get your boat to cross the finish line.
After a couple of races with the boats (the thinner ice boat always won), they had fun playing with and figuring out how to break the big hunks of ice.