Why is it so dark out?

Updated for 2015

This year's winter solstice will be at 11:48 PM EST on December 21st  (4:48 UTC December 22, 2015). In this geometry/Earth science investigation, we've asked students to question the Earth's latitudinal divisions, recognize its tilt, and appreciate the relationship of these measures and our present dark time of year.

winter-solstice2015.pdf

For members we have an editable Word doc, solutions to the activity, and possible observations and discussions.

winter-solstice2015.docx         winter-solstice2015-solutions.pdf

CCSS: 7.G.3, HSG.C, HSG.GMD.4, HSG.MG.1

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