Wired Science just posted an amateur-created panorama that shows the history of all six successful probe landings on Mars- from the Soviet Mars 3 probe in 1971 to the Viking probes in 1976 up to the more recent rovers. With the current excitement about Curiosity, I think it is important for students to understand the history of these other missions to the red planet.
Curating Transformative Science Education Resources
Science for All 