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    In this activity, learners make pykrete by freezing a mixture of water and a material like cotton wool, grass, hair, shredded paper, wood chips, or sawdust. Learners discover that pykrete has some...

    1 cent - $1 per student Ages 4 - adult 4 to 24 hours
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    In this activity, learners investigate how plants use water. By making the flowers change color, learners see how water moves up the stem to the leaves and the flowers. Use this activity to discuss...

    $5 - $10 per group Ages 6 - 11 4 to 24 hours

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