http://www.nasa.gov/worldbook/mars_worldbook.html
This NASA Worldbook site contains a great deal of information about Mars, including Martian mass, density, composition, geographic features, atmospheric characteristics, and the history of Mars exploration.

http://solarsystem.jpl.nasa.gov/planets/profile.cfm?Object=Mars
This Solar System Exploration site is an excellent resource for links to a gallery of photos and Mars information and a section for a “Kid’s Eye View” of space research.

http://marsprogram.jpl.nasa.gov/express/
This Mars Express site has links for students, teachers, and parents for information on Mars exploration and missions.

http://www.nasaexplores.com/show_58_teacher_st.php?id=021226100235
A NASA Explores activity, “Loop Airplane,” asks students to design a simple aircraft, to measure the distance it travels, and to calculate the median, mean, and mode of the distances measured.

http://www.nasaexplores.com/show_58_teacher_st.php?id=040929142405
“Plotting the Course” is a NASA Explores activity involving math and geography practice that asks students to plot the best route for a plane trip.

http://nssdc.gsfc.nasa.gov/planetary/planets/marspage.html
The Lunar and Planetary Science page links to images, fact sheets, and sites containing information on all planets, the moon, asteroids, and comets. It includes links to images of Mars and its moons, satellites, and orbiters and also has information on current, past, and future Mars missions.  

http://marsairplane.larc.nasa.gov/
The ARES (Aerial Regional-scale Environmental Survey of Mars) site describes the Mars Scout missions that are designed to return critical science data. These missions will study Mars’ atmosphere, surface, and interior using the ARES airplane.

http://www.nasa.gov/worldbook/space_exploration_worldbook.html
This NASA Worldbook site contains excellent information on the history of space exploration and the development of rockets. A living in space section details the dangers of space and issues concerning breathing, eating, drinking, eliminating body wastes, bathing, sleeping, and working in space.

http://www.aerospace.nasa.gov/
This site links to many informative NASA organizations, publications, people, and events. A student section contains links to CD-ROMs, videos, downloads, web-based learning programs, design challenges, and information on university programs and scholarships.