Science Egg Experiments - Gravity Goo 4-2-22-005 $2.00 Qty 10 available for immediate delivery Add To Cart Wish List Share: Product Details This one little egg contains two scientific experiments.Your junior Scientist can mix up gravity defying slimy liquid.Experiment #1:Swamp GooExperiment #2:Multicolor GooAge Recommendation: 8 - 12 years old