| Sidewalk Chalk |
From "DIY Kids"
episode DIK-211 |
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Materials: Modeling clay
Measuring cup
Plaster of Paris
Pencil or dowel
Spoon
Old bowl for mixing
Water
Tempera paint or food coloring
- Work the clay with your hands to get it warm. Using the pencil or dowel rod, roll the modeling clay (figure A) out into a slab about 4" by 6" by 1" thick.
- Pinch the corners up to make a rectangular-shaped dish (figure B). The modeling clay is now a mold.
- Mix plaster according to manufacturers instructions, usually two parts plaster to one part water. Mix until all the plaster is dissolved and is the consistency of batter.
- Add a few drops of tempera paint or food coloring to tint the plaster (figure C). Mix thoroughly. If using food coloring, you may need a good bit to get a strong, bright color.
- Pour the plaster into the mold (figure D) and smooth out the top.
- Let the plaster cure for one to three hours, until it hardens.
- While chalk is drying, wash all your mixing utensils very well. Wash all of your utensils outside -- plaster of Paris will clog your plumbing. Never pour liquid plaster down the drain or toilet.
- When the chalk is finished drying, peel the modeling clay from around it. Reuse modeling clay to make more chalk.
- It's helpful if you can let the chalk air dry for another several hours before use. Store in a plastic bag.
- When you are finished drawing your designs on the sidewalk, wash chalk away with water.
Tips: - Have an adult supervise anytime you are mixing plaster.
- NEVER put plaster of Paris down drains or toilets -- it will clog pipes.
Products can be purchased at hardware, discount and all-purpose stores. No special products are needed.
RESOURCES :
Sidewalk Chalk Games
Model: 0307304760
Author: Ellen Keller
(1999)
To order this title from Amazon.com, click here.
Golden Books Family Entertainment
New York, NY 10106
Phone: 212-547-6700
Email: info@goldenbooks.com
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