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This interactive demonstration reintroduces learners to three states of matter (solid, liquid, gas), and introduces them to a fourth state of matter, plasma.

Over $20 per group Ages 8 - 14 5 to 10 minutes
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Using information from the My Place in Space lithograph, learners write and/or draw a postcard to friends and family as if they had gone beyond the interstellar boundary of our Solar System, into the

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes