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

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

Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.

Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.

Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.