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In this lab (Activity #2 on page), learners compare bacteria growth on two petri dishes containing nutrient agar. Learners touch the doors, faucets, etc.

$1 - $5 per group Ages 8 - 18 1 to 7 days
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In this activity, learners will use cereal to conduct an experiment and investigate how decreased bone density is related to increased risk of bone fracture.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this lab (Activity #1 on page), learners compare bacteria growth on two petri dishes containing nutrient agar: one that has been touched by a finger washed only with water and one that has been tou

$1 - $5 per group Ages 8 - 18 1 to 7 days