Instructions from Michelle Vackar:
First, mix the baking soda, corn starch and light corn syrup together in a mixing bowl. Then mix in the white vinegar into your mixing bowl. You can divide this mixture into different containers and then add your food coloring for each color we placed 10-13 drops OR drop in your food coloring into the mixing bowl to make a large batch of one color.It takes roughly 24 hours for the watercolors to dry, but the thicker the depth of the watercolor, the longer it will take.
Although the colors were vibrant when first poured into the containers, they became more muted as they dried, and when we painted with them, the colors painted on to the paper nicely, but became lighter as they dried. If you want brighter colors, add a few more drops of food coloring. The paint will also have a little bit of texture to it, as baking soda is an ingredient.
An unexpected bonus of mixing up the paints was a little science lesson for my daughters. When mixing up the ingredients, I recommend using a slightly larger bowl than seems necessary so the kids can better enjoy the “science” volcano that slowly erupts as a result of mixing the vinegar into the baking soda mixture!
Paint on rock stars!
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