How to Make Goop for Classroom Activities

Kids and adults alike are amazed by the magical concoction commonly referred to as goop. Because of it unusual physical properties, this easy-to-make slime is hard to the touch one minute and dripping through the finger the next. When poked with a finger, it feels solid and is difficult to remove from the bowl, but once it is in the hand it appears to turn to liquid. It seems to defy all reason and provides hours of entertainment.

Things You'll Need

• Cornstarch
• Water
• Bowl
• Food coloring (optional)
• Zippered food storage bags

Instructions

1. Pour 2 cups of cornstarch in a bowl. You can purchase cornstarch in the baking aisle for a dollar or two. It generally comes in a 2-lb. box and will be more than enough to make goop.

2. Add enough water to dissolve the cornstarch. Add additional water until it reaches the consistency of clay. It will be difficult to stir. When squeezed into a ball, it should crumble.

3. Cover the play area or desks with a plastic mat or old newspapers, as goop will drip between the fingers and fall to the table.

4. Store in plastic food storage bag and seal tightly to prevent drying.

5. Clean up with soap and water.

Tips & Warnings

• Add a few drops of food coloring to make colored goop. Challenge students to describe goop.