National Aeronautics and Space Administration
Percentage and Volume: Space Food and Nutrition—How Much Is Waste?

In this web seminar for educators of students in grades 5-8, participants learned strategies for implementing a lesson in which students use ratios to compare the mass and volume of packaged food before and after repackaging for spaceflight and determine the usable and waste portions. Food packaged for use on Earth is not always suitable for use on spaceflights. Limits on weight and volume in space affect the way food is packaged. To meet the weight and volume restrictions, NASA uses special processes and procedures for preparing, packaging, and storing food for spaceflight.


This web seminar is part of a series of electronic professional development experiences sponsored by the NASA Explorer Schools (NES) project. NASA Explorer Schools invests in science, technology, engineering, and mathematics educators to inspire and engage a whole generation of future scientists, engineers and technicians that NASA needs to continue our journey. NES gives educators of grades 4-12 free access to NASA's people, missions, research, and facilities. We take the work out of searching through thousands of materials on the NASA website and provide a comprehensive set of teaching materials for dozens of STEM concepts. For additional information about the NASA Explorer Schools project, visit

See when other NASA Explorer Schools web seminars are scheduled.

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