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Cleaning with Dirt
Source Institutions
Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.
Straining Out the Dirt
Learners take on the role of environmental engineers as they design water filters.
Clean Water: Is It Drinkable?
Source Institutions
In this activity, learners simulate nature's water filtration system by devising a system that will filter out both visible and invisible pollutants from water.
Dye Detective
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Learners analyze mixtures of dyes using filter paper chromatography. They place spots of the different dyes at the bottom of a piece of filter paper, and hang the paper to touch the surface of water.
Light and Sound
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In this four-part activity, learners explore light and sound through a variety of hands-on investigations.
Laser Jello
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In this activity, learners use gelatin as a lens to investigate the properties of laser light.
Water Treatment
Source Institutions
Water treatment on a large scale enables the supply of clean drinking water to communities.
Giving Water the Treatment
Source Institutions
In this ecology activity (page 8 of the PDF), learners explore how to filter contaminated water using a variety of materials.