Did you know that chalk is a rock? It is made from gypsum. Read about gypsum online.
Plaster of Paris is just gypsum ground into powder. Here is a recipe for making sidewalk chalk.
Supplies List
a small container of Plaster of Paris
5 oz. disposable plastic cups [one for each color you want to make]
acrylic craft paint in your favorite colors
popsicle style craft sticks
water
measuring cups [1/2 c. 1/4c.]
measuring spoon [1t. size]
scissors
Steps to Follow
Plaster of Paris is just gypsum ground into powder. Here is a recipe for making sidewalk chalk.
Supplies List
a small container of Plaster of Paris
5 oz. disposable plastic cups [one for each color you want to make]
acrylic craft paint in your favorite colors
popsicle style craft sticks
water
measuring cups [1/2 c. 1/4c.]
measuring spoon [1t. size]
scissors
Steps to Follow
- Measure ½ c Plaster of Paris and place it into a plastic cup.
- Add 1 t. of acrylic paint to the plaster. Use a craft stick to scrape all the paint off the measuring spoon.
- Slowly add ¼ c. water while mixing. If you need to. Add a few extra drops water until the mixture looks like thick pudding.
- Set aside to harden overnight. Repeat steps 1-4 using different color paints.
- The next day, cut off the plastic cup. If the sides of your sidewalk chalk feel cool and damp, let dry for another day before using.
- Draw a picture!
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