Growing Bacteria in Petri Dishes

Take samples around you and see what bacteria will grow in an agar-filled Petri dish.

This activity will prove that Mom was right… “Wash your hands with soap and warm water!” A Petri dish prepared with nutrient agar (a seaweed derivative with beef nutrients added) is an ideal way to reveal the bacteria hiding all around you. You may not believe what you find hiding in all corners of every home and school and location in the world!

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