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Pollution Patrol
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In this activity, learners explore how engineers design devices that can detect the presence of pollutants in the air.

Air-filled (Pneumatic) Bone Experiments
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Just like birds, some dinosaurs had air-filled (pneumatic) bones, which made the dinosaurs' skeletons lighter.

Crunch Time
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In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure.

Spider Glider
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In this fun activity about spiders, learners build and design a spider from cardstock, straw, string, and pipe cleaners.

Yeast-Air Balloons
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In this activity, learners make a yeast-air balloon to get a better idea of what yeast can do. Learners discover that the purpose of leaveners like yeast is to produce the gas that makes bread rise.

Snake Kite
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In this activity, learners will explore the physics of air by making a snake kite.

Photosynthesis and Transpiration
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In this activity on page 7 of the PDF (Plants—The Green Machines), learners examine the effects that light and air have on green plants.

Cartesian Diver
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.

ANTacid: Indicator Paper on an Anthill
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In this activity, learners make acid/base indicator paper, place the indicator paper on an anthill, disturb a bunch of ants, and then observe what happens!

Is It Alive?
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What does it mean to be alive? Is a cactus alive? Is a seed alive? Is the air we breathe alive? What are the necessary characteristics?

Demonstrating An Epidemic
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This experiment allows learners to experience a small scale "epidemic," demonstrating the ease with which disease organisms are spread, and enables learners to determine the originator of the "epidemi

Super Soil
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In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter.