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Learners see that a carrot slice sinks in fresh water and floats in saltwater.

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

In this physics activity (page 3 of the PDF), learners will see firsthand that air takes up space and has pressure by attempting to inflate a balloon inside of a bottle.

Learners act as engineers and design mini submarines that move in the water like real submarines.

In this activity, learners explore Charles' Law in a syringe.

This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.

In this math lesson (page 2 of the PDF), learners use bottles of various shapes to explore the abstract concept of rate of change.

Learners create a tool to measure how well they grip a wet object when their fingers are smooth versus wrinkly. Are smooth or wrinkly fingers better at holding on to the object?