This interactive activity allows users to drop familiar objects onto images of floodplains on Mars to get an idea of just how large they are. The objects to be moved include a school bus, stadium, the state of Texas, the state of Hawaii, and the entire US. The activity is fun and educational, with interesting information embedded throughout. Full description.

This interactive activity lets you superimpose familiar objects onto images of various features on Mars so you can see just how large they are. The features include crater landing sites, the largest volcano in the solar system, and a headwater area, etc. The objects include a school bus, stadium, Texas, Hawaii, and the contiguous USA. The activity is fun and educational. Full description.

This interactive activity lets you superimpose familiar objects onto images of volcanoes on Mars (including Olympus Mons, the largest volcano in the solar system), so you can see just how large they are. The dropped objects include a school bus, stadium, Texas, Hawaii, and the contiguous US. Informative feedback makes the activity educational as well as fun. Full description.

This interactive activity lets you search for features on and around the Olympus Mons volcano on Mars (the largest in the solar system. You look at a large image of the volcano and small images of various features, such as lava channels, the caldera, and a lava flow. You are asked to identify where each part is on the large image. The informative feedback makes the activity educational as well as ... Full description.

This interactive activity lets you explore the Gusev Crater on Mars in 3D. This is the landing site for the MER rover in January 2004. The 3D model was created using data from orbiting spacecraft. You can examine the surface from a distance, changing lighting to enhance features, and fly over the surface, looking for markers hidden in the terrain. Full description.

This Nine Planets site highlights the history of spacecraft and discoveries they have made. It is divided into three categories that lead the user to specific mission information. Past Missions discusses the Luna, Mariner, Apollo, Pioneer, Venera, Viking, Voyager, Magellan, and Mars Observer. Ongoing Missions includes information about Voyager, Galileo, Hubble Space Telescope, Ulysses, Mars Surveyor ... Full description.

This interactive activity allows users to search for features in the Ares Valles floodplain on Mars. Looking at a large image of the floodplain, one tries to identify where small pieces of it are located. Informative feedback helps make the exercise fun as well as educational. Full description.

This interactive activity lets you explore the Olympus Mons volcano on Mars. The 3D model was created using data from orbiting spacecraft. You can examine the surface from a distance, changing lighting to enhance features, and fly over the surface, looking for markers hidden in the terrain. Informative feedback makes the activity educational as well as fun. Full description.

This Windows to the Universe site provides beginner, intermediate and advanced information about Martian flooding. It includes a NASA image of Mars despicting outflow channels and river valley networks, which provide evidence for two theories about the global Martian water cycle. Full description.

The Lunar and Planetary Institute (LPI) offers a variety of thematic slide sets. Each set is accompanied by a written description of the images, a glossary, and a list of suggested reading material. Each image features a caption explaining what is being shown. Topics include space shuttle views of the Earth, volcanic features on earth and other worlds, wind-formed features and impact craters on Mars, ... Full description.