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Separating a Mixture
Perkins School for the BlindAdd to list DetailsThis activity was designed for blind learners, but all types of learners can explore means of physically separating a mixture using dissolving, filtration, and evaporation. Separating a sand/salt...
Wetland Filter Model
Twin Cities Public TelevisionAdd to list DetailsIn this quick activity (located on page 2 of the PDF), learners will model how wetlands act as natural filters for the environment. Learners prepare a mixture of water, soil, gravel, and leaves and...
Water Filter
WGBHAdd to list DetailsIn this engineering activity, challenge learners to invent a water filter that cleans dirty water. Learners construct a filter device out of a 2-liter bottle and then experiment with different...
Walk On Water Bugs
University of Nebraska State MuseumAdd to list DetailsIn this activity (on pages 29-35), learners examine water pollution and filtration. First, learners build models of water bugs from paper clips, and test the effect of dirt and detergent on their ...
Water Treatment
New Jersey Department of EducationAdd to list DetailsWater treatment on a large scale enables the supply of clean drinking water to communities. In this activity, learners develop methods to clean a polluted water sample, describe components of a...
Cleaning Water with Dirt
American Chemical SocietyAdd to list DetailsIn this activity on page 7 of the PDF, learners make their own water treatment systems for cleaning water. Learners construct two filters to test: one with sand and one with sand and charcoal....
Low-Tech Water Filter for High-Impact Clean
Lunar and Planetary InstituteAdd to list DetailsIn this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water...