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.
TeachEngineering
Teach Engineering: Let's Get Dirty
In a very hands-on activity, students observe and feel the differences between two cleaning methods, with and without hand soap, using coffee grounds to represent "dirt."Most of the dirt and bacteria on our hands is encased in a thin...
Society for Science and the Public
Science News for Students: Cleaning Clothes Dirties Oceans
Describes research into the pollution caused by plastics that are hidden in the fibers of synthetic clothing, and eventually end up in the ocean after laundering. Cites other research that discovered plastic pellets found throughout the...