PBS
Pbs Learning Media: All Planet Sizes
This illustration from the Lunar and Planetary Laboratory shows the approximate sizes of the planets relative to each other. Note that the planets are not shown at appropriate distances from the Sun.
PBS
Pbs Learning Media: Nisqually Glacier at Mount Rainier
Observe the Nisqually Glacier at Mount Rainier in this video segment from NatureScene. [4:07]
Khan Academy
Khan Academy: Arts and Humanities: Big History Project
Course looking at history of the universe, the solar system, history of the Earth and of life on Earth. Should be cross-checked against videos. Has a few Crash Course videos in the content and the project has a presence on Youtube....
Khan Academy
Khan Academy: Guide, Slides, and Text Reader
Resources for teachers for the big history project. Includes a teaching guide, unit slides, and text reader.