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    NASA
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    In this activity, learners work in groups to design a parachute out of household items that keeps an egg secure when dropped from a certain height. Learners must follow a certain number of design...

    free Ages 11 - 18 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners create models of ionic compounds and observe the chemical formula of binary molecules they have created. Learners record their data in a table and draw conclusions by...

    free Ages 14 - adult 1 to 2 hours

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