One afternoon, Luke brought to me a library book he had been looking through. He found pictures of some children playing with a gooey mixture, and that was enough for him to know he wanted to make that stuff too.
The recipe for “Goop” comes from the book “Solid, Liquid, and Gas” by Melinda Lilly. Always looking for an entertaining, hands-on way to reinforce our school learning, I thought it would be a fun thing to make. We mixed 2 cups of water with one drop of food coloring and added to 3 1/2 cups of cornstarch. The combination creates a goop that is both a solid and a liquid. When poked and handled, the goop is a solid (because the water moves out of the way), but if allowed to sit still, it becomes a liquid flowing between your fingers. Luke describes goop as “awesome weird.”
One word of warning: this is an outdoor project! I learned that the hard way after wiping lots of goop off the floor and carpet and kids! We all had a fun time playing with this mysterious mixture, even Dad got in on the action! We couldn’t keep our hands off the stuff because it’s so “weird!” Science can be way fun and cool!