Cosmic Calendar [PDF] – Astronomical Society of the Pacific

Crater Creations: Moon – Lunar and Planetary Institute

Craters on the Earth and Moon – NASA Night Sky Network/Astronomical Society of the Pacific Note: In this video, you can show your students slow motion footage of similar impacts made in silica sand.

Date a Rock! – Karen Kalumuck (Exploratorium) and Larry Flammer (Evolution & the Nature of Science Institutes)

Determining Age of Rocks and Fossils – Frank K. McKinney/University of California Museum of Paleontology

Direct Hit at the K-T Boundary – NASA/Astronomical Society of the Pacific

The Day the Mesozoic Died – Howard Hughes Medical Institute Note: This roughly 34 minute video includes a number of related classroom activities and other teacher resources.

Galaxy Sorting – Astronomical Society of the Pacific

Coma Cluster of Galaxies (an activity on galaxy classification) – The University of Texas McDonald Observatory

Making Impact Craters – Lunar and Planetary Institute

Modeling Planetary Interiors and Differentiation – Lunar and Planetary Institute. Note: An accompanying PowerPoint here is recommended as part of this activity.

Time Lineup – Lunar and Planetary Institute

Toilet Paper Solar System – Astronomical Society of the Pacific

Pocket Solar System – NASA Night Sky Network/Astronomical Society of the Pacific

The Earth as a Peppercorn – Guy Ottewell

Worlds in Comparison – Astronomical Society of the Pacific