Search Results

Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

How many colors make black? Gather as many water soluble black markers as you can find.

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.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

Water treatment on a large scale enables the supply of clean drinking water to communities.