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In this activity, learners will first learn the basics of galaxy classification and grouping.

free Ages 14 - 18 30 to 45 minutes
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In this laboratory exercise, learners will discover how many different plant hosts they can find that are infected by the same genus of a powdery mildew fungus, or how many different genera of powdery

$1 - $5 per group Ages 11 - 18 45 to 60 minutes