Urania's Mirror: Constellation Cards
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Urania's Mirror was a set of constellation cards designed to aid in the teaching and learning of constellations. This set includes 32 cards, each focused upon one or a few constellations. Holes punched in the positions of bright stars allow one to hold any card up to a light and compare the star pattern with the constellation figure. This OER introduces these cards and includes a high-quality pdf of them to print and create your own.