BioColor® Homemade Watercolors

homemadewatercolors This is a great math/science experiment turned art project for kids of all ages!


  • Teach math concepts, such as measuring and counting
  • Introduce and demonstrate a chemical reaction
  • Provide an opportunity for open-ended art

Before You Start:

Prepare materials beforehand. You will need: BioColor® paint; liquid measuring cup; empty egg cartons; 4 tablespoons each of cornstarch, baking soda and vinegar (per every 10 egg cups in an empty egg carton); toothpicks; watercolor paper and brushes.

Let's Get Started! Step 1. Demonstrate to children how to count and measure dry ingredients. Have children help measure and mix cornstarch and baking soda together in the liquid measuring cup.

Step 2. Have children help measure and add the vinegar to the cornstarch and baking soda and mix until it reaches a creamy consistency. This is the watercolor base paint.

Step 3. Pour the watercolor base paint into the empty egg carton cups (making sure they are equal amounts and not to full).

Step 4. Now you are ready to add BioColor® paint for color. Have children squeeze BioColor®, a different color for each cup, into the watercolor base paint in the cartons.

Step 5. Let them mix the paints together with toothpicks (different toothpick for each color) until well blended and the color you want.

Step 6. Provide everyone with watercolor paper and brushes, and let children create their own works of art with their new watercolors!

Furthermore: The watercolor paint can be used right away, or set aside for 24 hours to dry and be used the same as regular watercolor paint. You could also make up larger batches of 4 or 6 of the same color in each egg carton for group open art with watercolors.

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