Fill eight plastic cups with 1/3 cup of cold water, and then add two tablespoons of paint to each cup. Since there are only six colors, to create your last two mix pink and blue to make purple, and green and blue to make aqua!
Mix your water and paint, then add 2/3 cup of plaster of Paris to each of your cups and stir until all combined and smooth.
Now, pour each color into your silicone moulds, and then lightly tap your mold on your work surface to remove any air bubbles.
When the chalk starts to harden cut your Popsicle sticks a little over half way and insert in the middle of your moulds.
Wait a few hours for the chalk to fully cure then remove them from the mold and have fun!