Can the class think like the scientists on the International Space Station? Engineers design, test, collect data, and improve a water filtration device similar to a system found on the ISS. Participants use pH strips, optional conductivity testers, and qualitative observational skills to collect data and improve their filters.

Concepts

engineering design, engineering practices, water quality, water filtration, drinking water

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Instructional Ideas

• Have investigators build and check conductivity testers prior to the activity as a way to introduce the water quality challenge
• Assign roles to team members to organize workflow and facilitate collaboration

Classroom Considerations

• Uses a variety of materials for filter construction to gather ahead of time
• Caution students to avoid consuming any water produced during the activity

Pros

• NGSS-aligned activity also incorporates the engineering design process
• Includes extension ideas to continue the learning

Cons

• None