• communicating
  • moving-fine

What you need: 2 clear glasses of fresh water (from the sink); salt; spoon; food coloring; ice

What you do:

  1. Place a few ice cubes into one of the glasses.
  2. Add a few drops of food coloring into the ice water; watch it disperse throughout the water.
  3. Add several tablespoons of salt to the other glass of water and stir it up to dissolve.
  4. Add some ice cubes to the salt water glass
  5. Add food coloring to the salt water & watch what happens!