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This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

Learners use a candle to investigate the products of combustion. When a glass rod is held over a lit candle, the candle flame deposits carbon on the rod.

Learners create a small explosion by collecting hydrogen and oxygen gas together and squeezing them into a flame.

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