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In this activity, learners make a scale model of an atom to see how big or how small an atom is compared to its nucleus. Learners will realize that most of matter is just empty space!

In this activity, learners make different shapes that hold exactly one mole of gas (air).

In this meteorology activity, learners construct simple devices to measure the direction and speed of wind.

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