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Scale Model of Sun and Earth
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In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.

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.

Hungry as a Caterpillar
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In this indoor and outdoor activity, learners discover that insects grow and develop as do all living things, going through a process known as complete metamorphosis.

What's in a Dinosaur Name?
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In this activity, learners explore the etymology of dinosaur names.

What's So Special about Water: Solubility and Density
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In this activity about water solubility and density, learners use critical thinking skills to determine why water can dissolve some things and not others.

Gravity and Muscles
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In this activity about center of gravity (page 23 of PDF), learners investigate how the body adjusts to the force of gravity to remain balanced.

Make Your Own Telescope
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Discover how a refracting telescope works by making one from scratch using common items. This telescope won't have a tube so the learner can see how an image is formed inside the telescope.

Anti-Gravity Cups
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In this activity, learners will use simple materials to explore centripetal force and variables by swinging a cup of water without having the water spill out.

What Is a Neuron?
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This neuroscience activity introduces learners to how messages are sent and received by neurons. Learners use modeling clay and pipe cleaners to build model neurons.
The Blue Crab's Chesapeake Journey
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In this data collection activity about crabs, learners use data from the Virginia Institute of Marine Science (VIMS) trawl survey to determine the areas of the Chesapeake Bay that are being used by bl

Conversation Piece
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Focus sound through a balloon! In this Exploratorium activity, you'll use dry ice to create a balloon that's a sound lens.

Where the Buffalo Roam
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In this activity, learners explore the Great Plains.

Liquid Layers
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Experiment with liquids of different densities and create liquid layers. For example, oil and water have different densities: oil floats on water because it is less dense than water.

Zany Zen Garden
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In this activity, learners will turn an ordinary tray of sand into a desk-top garden for meditation.

Slide Rules
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Learners make their own simple slide rules out of paper and learn how they work.

Bubble Sculpting
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In this activity, learners develop spatial reasoning skills as they blow bubbles and observe what happens when the bubbles connect.

Eggshell Inertia
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In this physics activity (page 14 of the PDF), learners gain a better understanding of how friction and mass affect objects by comparing the rotational inertia of raw and hard-boiled eggs.
Numbered Heads
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In this math activity, learners play a game and use a variety of strategies to solve a hidden number problem (or missing factor). Learners practice their number and operations skills.

Applesauce
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In this "Sid the Science Kid" activity from Episode 109: The Perfect Pancake, learners make applesauce to explore irreversible change.

Right Eye/Left Eye
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In this activity (3rd on the page), learners conduct a series of tests to find out which of their eyes is more dominant.