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    The University of Texas McDonald Observatory
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    Can gelatin (like Jell-O ®) change the speed of light? Learners investigate the refraction properties of gelatin to calculate its index of refraction and discover that as the light travels through...

    $5 - $10 per group Ages 14 - 18 1 to 2 hours
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    The University of Texas McDonald Observatory
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    In this activity, learners construct their own spectroscope as they explore and observe spectra from familiar light sources. Learners can be challenged to make technological improvements to their...

    $5 - $10 per group Ages 14 - 18 45 to 60 minutes

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