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Cosmic Debate

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In this activity described on pages 2-3 of the PDF, participants debate whether there there's life elsewhere in the universe.
1 cent - $1 per student Ages 14 - 18 30 to 45 minutes

Do the Mystery Samples Contain Life?

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In this activity (on pages 13-16 of the PDF) learners investigate three mystery samples to see which one contains life. The three samples are sand, sand and yeast, and sand and antacid.
1 cent - $1 per group Ages 4 - 14 30 to 45 minutes