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Poof-Slinky Scientific Explorers Disgusting Science Kit is an exceptional series of home science kit that is acclaimed for excellence as a teaching resource. Why do your feet really stink? What kinds of creatures actually live on you? What makes you pass gas? And many more questions answered. This package contains four petri dishes, one magnifier, four cotton swabs, 2oz/56g gelatin, 1oz/28g sugar, 0.25oz/7g baking yeast, 0.2oz/5ml red coloring, 0.2oz/5ml green coloring, one rubber balloon, one small plastic bag, and an activity guide. This imported package is recommended for children ages 8 and above under adult supervision.