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In this activity, learners measure the amount of carbon dioxide in a carbonated drink.

In this quick activity, learners drink Avogadro's number worth of molecules - 6.02x10^23 molecules!

In this activity, learners hook up a hair to a lever system and create a hair hygrometer to measure changes in humidity.

In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.

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

In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.