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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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In this archaeology meets art activity, learners make a mosaic and consider the ways in which art communicates.

$10 - $20 per group Ages 8 - 18 1 to 7 days
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Agriculturalists have long considered mushroom growing a challenge, largely because you need a piece of benchtop equipment known as a laminar flow hood.

Over $20 per group Ages 11 - adult 1 to 4 weeks