Step-by-step tutorial
Step 1
Fold the coffee filters in half and set up some liquid watercolors (in rainbow colors, of course) to use.
Step 2
Use a dropper to “paint” rainbows on the coffee filter. Watch how some of the colors blend together!
Final result!
Let the coffee filters dry and then open them up. Do you see the rainbow? What other color combinations can you experiment with?
