Materials
Ice-cube tray
Red food coloring
Blue food coloring
Ziploc bag (quart size)
Directions
Fill an ice-cube tray with water. Invite your child to place a drop of food coloring in each section of the tray; for half the tray, use red, in the other half, use blue. Freeze. Once the water has turned to ice, invite your child to place 1 or 2 cubes each of red and blue ice into a Ziploc bag. Place the bag on a surface where your child can observe what happens as the ice begins to melt. What color is the water from the melted ice?