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    Berkeley Natural History Museums
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    After an interest-generating discussion about "dirt" and microbes, learners select and collect soil samples from a variety of locations (schoolyard, home, etc.). They make a dilution in...

    $1 - $5 per group Ages 8 - 18 1 to 7 days
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    BioEd
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    In this four-day activity, learners grow bacteria and/or fungi from a variety of locations and compare the results. They will learn that microbes are everywhere; some such as bacteria and fungi...

    $10 - $20 per group Ages 8 - 14 1 to 7 days
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    Oregon Museum of Science and Industry
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    In this activity, learners grow germs collected from their hands and other objects. They cultivate the germs on a growth medium (such as slices of grapefruit or processed cheese) for a week....

    1 cent - $1 per student Ages 6 - 14 1 to 7 days
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    National Health Museum
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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...

    $1 - $5 per group Ages 8 - 18 1 to 7 days
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    National Health Museum
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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. in bathroom and then immerse their hands in...

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