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Design and Build a Barometer

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In this activity, learners make a barometer, an instrument to measure change in air pressure.
$5 - $10 per group Ages 8 - 14 1 to 7 days

Water Body Salinities II

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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.
$5 - $10 per group Ages 8 - adult 1 to 7 days