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The Size and Distance of the Planets
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In this activity, learners investigate the concepts of relative size and distance by creating a basic model of the solar system.

Chromatography
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In this chemistry activity, learners will separate a mixture of FD&C dyes (colors certified and allowed by the US for the Food, Pharmaceutical, Cosmetics & Personal Care industry) to practice

Bird Feeders
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In this activity, learners build a bird feeder or feeders to attract birds for observation.

Breathing Machine
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In this activity, learners work in teams to construct human lung models from small plastic beverage bottles and balloons.

Bright Lights
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In this activity about electricity, learners imagine that they are out in the wilderness and it is getting dark. Their task is to use the materials supplied to build a simple flashlight.

Marshmallow Models
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No glue is needed for learners of any age to become marshmallow architects or engineers.

Strange Attractor: Observe Chaotic Motion
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In this activity, learners can observe chaotic motion. A magnet tied to a piece of string makes a pendulum, which swings over three sets of fixed magnets.

Chocolate Lava
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In this yummy earth science activity (page 5 of the PDF), learners use fudge to learn about different kinds of lava.

Cook with a Solar Oven
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In this activity, learners make their own solar oven to bake s'mores and learn about how solar energy is absorbed on Earth.

What Does Spit Do?
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Some animals can swallow food whole, but humans have to chew. In this activity, learners will investigate what saliva does chemically to food before we even swallow.

Wolf Postures
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In this activity, learners investigate how wolves communicate with each other through different body postures.

Crystal Stencil Stars
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In this activity on page 6 of the PDF, learners dissolve Epsom salt in water and discover that the resulting solution can be used to create a work of art.

Hit the Spot!
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This is a hands-on activity about the physics of tennis. Learners will discover that physics plays a big part in tennis, no matter what their skill level might be.

Hang Time
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In this physics activity, learners will build their own parachutes out of tissue paper. They will explore the effects of weight, height, and design on the parachutes' speed and stability.

Finding the Size of the Sun and Moon
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In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

Changing Body Positions: How Does the Circulatory System Adjust?
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In this activity about how the body regulates blood pressure (page 117 of the PDF), learners make and compare measurements of heart rate and blood pressure from three body positions: sitting, standing

Map Your World
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In this activity, learners map their world by drawing a plan of their bedroom.
Float or Sink?
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In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.

Balloon in a Flask
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Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

Bottle Blast Off
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With little more than a plastic bottle, some vinyl tubing, and a length of PVC pipe, make a rocket and a rocket launcher and investigate how rockets fly.