National Aeronautics and Space Administration
Engineering Design Challenge: Water Filtration

This seminar featured background information about recycling, filtering water, and a classroom challenge for students. Earth recycles water naturally. Water is also recycled in processing plants by humans and in the Water Recycling Assembly on the International Space Station. During this seminar, educators got background information about the principles that apply to all three systems and then found out how to incorporate the information into an exciting hands-on, inquiry-based challenge that requires students to solve a problem in the best way they can create. Participants watched a video showing one possible solution and students engaged in the challenge. Educators discussed possible modifications to the challenge to adapt it for their students and classroom situations.


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

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