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In this introductory demonstration and activity, learners are introduced to the concept of density as they explore a rock and a wooden block in water.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners explore the process of condensation.

1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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In this activity on page 6 of the PDF, learners dissolve Epsom salt in water and discover that the resulting solution can be used to create a work of art.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes