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Team Up: Fun With Division
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In this activity, learners will divide into teams or groups of equal size. “How many teams of three can we make?” “We need an equal number of children at each of the four computers.
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Exploring the Solar System: Magnetic Fields
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The "Exploring the Solar System: Magnetic Fields" activity shows participants how scientists can use tools to study the invisible magnetic fields of Earth, the Sun, and other objects in the universe.
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Guess the Sentence
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In this activity, learners play a game similar to Hangman by guessing a secret phrase to understand how computer scientists measure the amount of "information" in a document.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-793.jpg?itok=Af1Dettc)
Exploring the Universe: Star Formation
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In this activity, participants will learn how stars form from the dust and gas that exists in space clumping together.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-991.jpg?itok=kT23JQks)
Information Hiding: Sharing Secrets
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This activity about cryptographic techniques illustrates a situation where information is shared, and yet none of it is revealed.
Quick Questions: Learn About Data
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In this activity, learners will collect and analyze data to learn about the people around them. How many letters in everyone’s first name? What’s the most common number of letters?
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So Many Parts
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In this online Flash game and spacewalk mission simulation, learners are challenged to repair parts of a space station while balancing their oxygen and fuel use carefully.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-129.jpg?itok=6fDi9wu0)
Mystery Number
Source Institutions
Combine logic and numbers in this game for all ages. Players start with a 10x10 grid of the numbers 1 to 100. One person chooses a secret number and announces the range in which it falls.
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Exploring Forces: Gravity
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In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.
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Balloon Kebabs
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In this demonstration, learners observe the effects of density and pressure by attempting to make "balloon kebabs." Learners will try to insert a wooden skewer all the way through an inflated balloon
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Changing Colors
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In this activity, learners will explore how different colors of lights interact with objects around them. Will a blue object stay blue with a red filter?
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Cafe Wall Illusion
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In this fun and interactive online exhibit, the straight lines of a tile wall appear to curve. The learner moves the rows of tiles and changes the color of the grout to achieve the intriguing effect.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-020.jpg?itok=X1oQNSMu)
Guess My Rule
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In this simple game, learners start to understand how to sort and categorize objects by trying to guess the connection between three items that someone else has chosen.
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Air Pressure
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In this experiment, learners use a blow dryer and water bottle to observe and record changes in air pressure caused by changes in temperature.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-018.jpg?itok=VRrpCZWv)
Fireworks in a Glass
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In this activity, learners use water, oil, and food coloring to observe a chemical reaction that creates a shower of colors inside of a glass.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-514.jpg?itok=zdARW8e0)
Eclipse: How can the little Moon hide the giant Sun?
Source Institutions
In this activity, learners explore how distance can affect the way we perceive the size of an object.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-500.gif?itok=_SVyqqFy)
Gas Producing Micro-Reaction
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In this chemistry activity, learners use common chemicals and metals to examine reactions that produce gaseous substances.
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Save Your Ears
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This game depicts a woman going through her day, faced with various loud sounds.
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What's That Sound?
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This game plays a dozen different sounds, altered to simulate what they would sound like if you had hearing loss.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-508.jpg?itok=m2jntWln)
Shake the Bag Ice Cream
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In this activity, learners will experiment with salt and ice in order to turn a bag of ingredients into ice cream.