In solving each Mystery, users are required to access and analyze actual data from NASA missions, including video "interviews" with real NASA scientists. The tools used by the students are designed to possess an inherent flexibility which allows them to develop and practice important science skills at their own pace. Each Mystery has been constructed to teach at least one of the important physical science standards (e.g. interactions of energy and matter, structures and properties of matter, energy, motion, or forces), and is accompanied by materials to be used by the classroom teachers.