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What keeps bubbles and other things, like airplanes, floating or flying in the air?

How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface.

By making models of light waves with paper, learners can understand why different colors appear in bubbles.

In this activity, learners explore Boyle's Law and discover that water will boil at room temperature if its pressure is lowered.

This is an activity about acid-base reactions using eggs and vinegar. Learners place eggs inside a container of vinegar and leave to soak overnight.

In this optics activity, learners split white light into all its component colors using three household items: a compact disc, dishwashing liquid, and a hose (outside).

In this quick activity (page 1 of the PDF under SciGirls Activity: California Fish), learners will build a simple Cartesian Diver in an empty 2-liter bottle.