Clean Water STEM Challenge Pack

What you get

• Six design challenges: build a filter, move water uphill, slow the flow, catch the rain, separate the mixture, and design for a drought
• Constraint and materials cards for each challenge, so groups work within real limits
• A design-thinking planning frame: define, plan, build, test, improve
• A fair-test scoring sheet so results are measured, not judged by looks
• Group role cards for teams of three or four
• Reflection and presentation pages
• Teacher notes with common misconceptions and how to handle them

Safety

All challenges use ordinary tap water and classroom materials. Water produced in filtration challenges is not for drinking. Adult supervision is required throughout.

Format

• Printable PDF, US Letter and A4
• Cards are laid out for printing and cutting once, then reusing

Licence

This resource is licensed for one teacher and one classroom. You may print and copy it for your own students. Please do not share the file with other teachers, upload it to a shared drive, or resell it. School and site licences are available — contact us.

Instant download and refunds

Your download link appears on the order confirmation page and is emailed to you straight after payment. You can also find it any time in My Account › Downloads. Because the file is delivered immediately, we do not offer change-of-mind refunds once a file has been downloaded — but if a file will not open, is corrupt or is not what was described, contact us and we will replace it or refund you. This does not affect your rights under mandatory consumer law. Full terms: Refund & Cancellation Policy and Digital Products Policy.

Common questions

How long is each challenge?

Most run in one 45–60 minute session, with an optional second session for redesign.

Do I need to buy equipment?

No. Materials lists use recycled bottles, sand, gravel, cotton wool, tape and string.