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Arithmetic
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In this online activity, learners will brush up on their multiplication, division, and factoring skills with this exciting game.
Globe at Night
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.
Salts & Solubility
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In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate.