NASA
Nasa: Testing a New Spacecraft Material
This is a site from NASA that provides an activity where "You have invented a new material to use for the fuel tanks on the spacecraft. But before you send your new material into the harsh environment of space, you must test it on Earth...
National Center for Ecological Analysis and Synthesis, University of California Santa Barbara
Nceas: Scientific Method
This concise site from NCEAS contains an explanation of the scientific method along with a basic example of the scientific method in action.