This is the recipe for play dough my mom used to make for us when I was a little girl! It's perfect for the first day activity described below.
2 1/2 cups flour
1/2 cup salt
2 pkg kool-aid (unsweetened)
2 tablespoons cream of tarter
2 cups boiling water
3 tablespoons oil
Mix 3-4 minutes or until cool enough to mix with hands.
Knead and store in an airtight container in refrigerator.
You will most likely need to make a few batches, depending on how much you give to each child.