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Most people will break a bone in their body at some point in their life, but how much force does it take to break one?

In this activity on page 4 of the PDF, learners investigate the importance of washing their hands.

In this activity on page 4 of the PDF (Water in Our World), learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water.

To understand how skaters turn in midair, try this little experiment! Individuals can do this activity alone, but it works better with a partner.

In this activity, learners discover that two pendulums suspended from a common support will swing back and forth in intriguing patterns, if the support allows the motion of one pendulum to influence t

In this simulation, learners explore how ocean currents spread all kinds of pollution—including oil spills, sewage, pesticides and factory waste—far beyond where the pollution originates.

In this activity, learners will create their own simple shadow puppets, and experiment with light and shadow while playing with them.

This is an activity about motion, power, air and Newton’s Third Law of Motion, which states that for every action there is an equal and opposite reaction.

In this activity, learners work in pairs to conduct a series of experiments using a balloon, drinking straw, and paper.

In this engineering/design activity, learners make a kite, fly it, and then work to improve the design. Learners explore how their kite design variations affect flight.

Learners build a model of a pollution control device--a cyclone. A cyclone works by whirling the polluted air in a circle and accumulating particles on the edges of the container.

In this activity on page 15 of the PDF, discover how materials and physical forces behave differently at the nanoscale.

In this chemistry activity, learners perform three chemical reactions in a sealed zip-top bag. Learners will record their observations and classify the changes as chemical or physical.

In this sunny day experiment, learners measure and compare how quickly light and dark colored materials absorb heat.

This activity provides step-by-step instructions on how to build a rain stick, a musical instrument originating in South America.

In this activity about electricity, learners build and test a paper clip switch to turn on a light bulb.

In this activity, learners work in teams to construct and test fly drinking straw rockets. Learners explore how changing the rockets' fins affect flight distance.

In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

In this activity on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients.

This activity demonstrates liquefaction, the process by which some soils lose their solidity during an earthquake.