Make Your Own Colorful Chalk Rocks
CHALK ROCKS!
Warning: Plaster is dangerous if inhaled in it's original state and after it is mixed it get's very hot. Wait until your kids are old enough to follow directions and/or have another adult present to help out.
SUPPLIES TO MAKE CHALK:
Bucket of Plaster of Paris – we mixed it 2 cups at a time
Disposable dish and utensils
Water
Funnel
Balloons
Bucket of Water – for rinsing any plaster bits that might get on your skin ASAP.
DIRECTIONS:
Mix the plaster and the water together by the directions on your container.
Add food coloring and mix quickly.
It should look the consistency of pancake batter. Runny and some small lumps are okay. Add dye to your plaster – use more than you intend for the final product. It will lighten considerably in the finished product.
Put the balloon around the mouth of your funnel. Spoon the plaster into the balloon.
We had to bang the side of the funnel to ensure that the plaster filled the balloon. Tie off the balloon.
Then your kids get to squish the balloon until it gets really warm.
Once it is warm, try to form it into the shape you want the chalk rock to be when you are done. If it is too warm put the balloon down – most likely it is already set at that point.
Wait a full 24 hours and then cut the balloon from the chalk rocks to reveal your artistic creation.
Have fun coloring!