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    NASA
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    Through a series of simple body movements, learners gain insight into the relationship between time and astronomical motions of Earth (rotation about its axis, and orbit around the Sun), and also...

    $5 - $10 per group Ages 11 - adult 2 to 4 hours
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    The University of Texas McDonald Observatory
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    In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model. Then they extend to explore the motions of the...

    1 cent - $1 per group Ages 4 - 18 1 to 2 hours
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    The University of Texas McDonald Observatory
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    In this three part activity, learners explore and experiment with shadows to learn about the Sun's relative motion in the sky. Learners will trace, measure and compare their shadows over time,...

    1 cent - $1 per group Ages 4 - 11 1 to 2 hours
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    NSBRI
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    This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel. Learners will discover how the light/dark cycle is dictated by the rotation of...

    free Ages 8 - 18 45 to 60 minutes
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    Colorado State University
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    This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset. Learners observe as a special "sunset egg" and a white light reveal...

    $1 - $5 per student Ages 8 - 14 5 to 10 minutes
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    NASA
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    This demonstration activity models how Venus appears from Earth. This activity will help learners see why Venus appears to us sometimes as the "morning star" and sometimes as the "...

    1 cent - $1 per group Ages 4 - 14 5 to 10 minutes