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In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.

The "Rocket Reactions" activity is an exciting way to learn about how materials interact, behave, and change.

In this activity, learners test what happens when they put baking power on different frozen liquids.

In this activity (on page 2 of the PDF), learners explore surface tension by adding pennies to cups which are "full" of plain water or soapy water.