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In this activity, learners use cheap, thin plastic garbage bags to quickly build a solar hot air balloon. In doing so, learners will explore why hot air rises.

In this team design challenge (page 19-24 of PDF), learners "land" a model Lunar Rover in a model Landing Pod (both previously built in activities #3 and #4 in PDF).

In this up-cycling activity, learners recycle plastic bags and repurpose them into useful wallets.

In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

In this classic reaction, learners baking soda and vinegar in a soda bottle to produce carbon dioxide (CO2) gas. This gas inflates a balloon.

Ocean acidification is a problem that humans will have to deal with as we release more and more carbon dioxide into the atmosphere.

This hands-on activity lets participant explore chemical reactions as they create a soda explosion with lots of bubbles. The bubbles in soda are made of carbon dioxide gas.

In this design challenge activity, learners use a balloon and other simple materials to design an air-powered rocket that can hit a distant target.

Learners build a simple aneroid barometer to learn about changes in barometric pressure and weather forecasting. They observe their barometer and record data over a period of days.

In this activity, learners will make their own slushies and learn some of the science behind how the process works.

Make a rattle-like musical instrument! Shake it, hit it, spin it any way you want to!

Like water drops in falling rain, a CD separates white light into all the colors that make it up.

Learners conduct a simple experiment to model and explore the harmful effects of acid rain (vinegar) on living (green leaf and eggshell) and non-living (paper clip) objects.

In this activity, learners investigate Scanning Probe Microscopes (SPM) and then work in teams using a pencil to explore and identify the shape of objects they cannot see, just as SPMs do at the nano

Learners demonstrate how water can distort, refract and magnify light.

In this activity, learners build a sled kite that models a type of airfoil called a parawing.

In this physics activity, learners will explore the concept of buoyancy, especially as it relates to density.

In this activity, learners explore how changes in fluid pressure affect the buoyancy of a Cartesian diver inside a plastic soda bottle.

Learners investigate how temperature affects the rate of chemical reactions by observing how steel wool reacts with various types of Kool-Aid solutions at different temperatures.

Learners apply their knowledge from a previous study to identify different liquids--water, corn syrup, and vegetable oil.