The cornstarch can be found in the detergent section of the grocery store. In a plastic bowl mix one and a half cups of glue with one cup of cornstarch. It will become very sticky. You have to use your hands to mix the two. If the slime becomes to sticky after the ingredients are mix add a little more cornstarch.
Slime is a fun sensory activity and is also messy.
Smocks or old Dad recycled shirts should be used while making slime to prevent damaged clothing. Slime should be used while it's cool. It becomes sticky after warm hands have played with it for a while. The slime should be store in the refrigerator for a while then returned to play area. Slime should also be stored in the refrigerator after each use to prolong the life of the Slime.