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Water Filter
Source Institutions
In this engineering activity, challenge learners to invent a water filter that cleans dirty water.
Walk On Water Bugs
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In this activity (on pages 29-35), learners examine water pollution and filtration.
Separating a Mixture
Source Institutions
This activity was designed for blind learners, but all types of learners can explore means of physically separating a mixture using dissolving, filtration, and evaporation.