Technovation
Curiosity Machine: Challenges: Build a Water Filter
A challenge for students to build a water filter that can clean dirty water. Site includes challenge, a lesson plan, tips, and a place for students to document their engineering design process.
Other
North Carolina Department of Energy and Natural Resources: Dirt Can Be Dirty
Did you know that the #1 pollutant in North Carolina is dirt? When soil is washed into streams and river, it smothers small animals and fish by clogging their gills. Look for bare patches of ground around your home and around your school...
National Institutes of Health
Niehs: Kids' Pages: River and Stream Pollution
What makes our rivers and streams dirty? This brief overview discusses the causes of pollution in rivers and streams and how to solve it.
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