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Stripped-down Motor
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this activity, you'll make an electric motor--a simple version of the electric motors found in toys, tools, and appliances everywhere. The activity includes three short online videos: Introduction, Step-by-Step Instructions, and What's Going On. Also available: a concept map and a "Going Further" document that suggests variations on this activity.

Subject:
Career and Technical Education
Electronic Technology
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
National Science Foundation
The Exploratorium
Date Added:
12/07/2007
Sweat Spot
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this activity, learners use a chemical reaction to visualize where moisture forms on the body. Learners use the Minor's iodine-starch test, a diagnostic test that doctors use to detect hyperhidrosis (excessive sweating), to identify where moisture is forming. Learners also use this method to test the effectiveness of different antiperspirants.

Subject:
Chemistry
Physical Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Julie Yu
National Science Foundation
The Exploratorium
Date Added:
11/07/2007
Three Circles of Pigments
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CC BY-NC-SA
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In this activity, learners overlap the three primary colors to see how all other colors are made. This activity also explains how color can be explained by the subtraction of colors of light, related to the principles of absorption and reflection of light.

Subject:
Arts and Humanities
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Eric Muller
The Exploratorium
Date Added:
11/07/2005
Whirling Watcher
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CC BY-NC-SA
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In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through. Brief but frequent glimpses of images seen through the slits lead to a surprising result, which teaches learners about vision and the human nervous system. The activity includes three short online videos: Introduction, Step-by-Step Instructions, and What's Going On. Also available: a concept map and a "Going Further" document that suggests variations on this activity.

Subject:
Physical Science
Physics
Material Type:
Activity/Lab
Provider:
Exploratorium
Provider Set:
Science Snacks
Author:
National Science Foundation
The Exploratorium
Date Added:
12/07/2007
Wind Tubes
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this activity, learners create and experiment with wind tubes. These tubes are a playful and inventive way to explore the effect that moving air has on objects. Construction uses everyday materials such as a fan and embroidery hoops. It's fun to make things fly out of or float in the tubes, and to adjust the tubes to change the way the objects fly. The activity requires a significant amount of time and resources to build and may require adult help in construction. Experimentation with the wind tubes is engaging for a wide age range of learners.

Subject:
Physical Science
Physics
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Exploratorium
National Science Foundation
The Exploratorium
Date Added:
12/07/2012
Yeast-Air Balloons
Conditional Remix & Share Permitted
CC BY-NC-SA
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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. Learners discover that as yeast feeds on sugar, it produces carbon dioxide which slowly fills the balloon.

Subject:
Biology
Life Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
National Science Foundation
The Exploratorium
Date Added:
12/07/2012
Your Age on Other Worlds
Conditional Remix & Share Permitted
CC BY-NC-SA
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Did you know that you would be a different age if you lived on Mars? It's true! In this activity, you'll learn about the different rotation and revolution periods of each of the planets and calculate your age respectively. Included is an astronomy history lesson and explanation of Kepler's Laws of Orbital Motion. The activity has a calculator built into the web page, but the activity can be made more math intensive by using the given data to calculate the learner's age by hand.

Subject:
Astronomy
Physical Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Ron Hipschman
The Exploratorium
Date Added:
12/07/2000
Your Body in Your Mind's Eye
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CC BY-NC-SA
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This activity is about how you form mental images of your body's position in space, independent of vision. Can you take a sip of water from a cup with your eyes closed? If so, how are you able to navigate this maneuver without seeing the cup? Find out here!

Subject:
Psychology
Social Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Karen Kalamuck
The Exploratorium
Date Added:
12/01/2012
tiny Pants Photo Challenge
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this activity, learners use basic measurements of the Earth and pieces of rock and iron to estimate the mass of the Earth. Learners will calculate mass, volume, and density, convert units, and employ the water displacement method. To calculate an even more accurate estimate of the mass of the Earth, this resource includes optional instructions on how to measure the iron core mass.

Subject:
Physical Science
Physics
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Eric Muller
The Exploratorium
Date Added:
11/07/2010