Curated OER
Reasons for Seasons
Students investigate a model of the tilt of the Earth in its relationship to the Sun during the different seasons of the year. They study the solstices and equinoxes, while determining how sunlight hits the Earth with different angles in...
University of California
Cse: What's Your Sign? The Science Behind the Zodiac
This paper presents the explanation behind the Zodiac signs. It discusses motions of celestial objects, the Plane of the Ecliptic, and the constellations of the Zodiac.
Utah Education Network
Uen: Tracking Sunrise and Sunset
Students will collect, record, and graph the sunrise and sunset times to see how they change throughout the year.
University of St. Andrews (UK)
University of St. Andrews: Claudius Ptolemy
This site, which is provided for by the University of St. Andrews, contains biological information as well as the works of Ptolemy.