Science U
Science U: Reasons for the Seasons
This webpage uses diagrams and video to explain the causes of the seasons.
Oklahoma Mesonet
Oklahoma Climatological Survey: The Seasons
Find out what the seasons are and how they change. Through the use of excellent graphics, content explores the Earth's orbit around the sun and how sunlight reaches the earth at equinox and the winter solstice.
ClassFlow
Class Flow: Space
[Free Registration/Login Required] This flipchart describes what causes the seasons, explains the moon's phases, and introduces what a constellation is. It utilizes the Activotes to help describe the phenomena.