- ice cubes
- cup of water
- Float an ice cube in the cup of water.
- Carefully lay one end of a piece of string on the floating cube.
- Sprinkle a pinch of salt onto the string and wait for about 30 seconds.
- Pick up the string, and WOW, you caught an ice cube
- But what else can you use besides salt? Try sugar, pepper, sand, flour, you name it. See what works, and what doesn't, and try to figure out why!
Which of these things did you use to catch an ice cube?