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Showing results 581 to 600 of 649
Create a Mangrove Tree
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In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-145.jpg?itok=dVjivQ94)
Cable Car
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In this activity, learners string a line across the room and build cable cars that can move from on end to the other.
Triboluminescence
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In this activity, learners discover what happens when they crush wintergreen-flavored candies in a very dark room.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-151.jpg?itok=dMc2_Ki5)
Bouncing Yo-Yo
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In this activity, learners build unique yo-yos, which spin round and round without moving up and down.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-706.jpg?itok=8aEwQOrL)
Hovercraft
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In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-712.jpg?itok=L9ZtuIUH)
X-Ray Spectra
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In this activity, learners use simple materials to simulate the effect of X-rays in a safe way. Learners place a piece of window screen over a box and a cardboard pattern on top of the screen.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-429.jpg?itok=Y2iPIc2e)
Conservation of Mass
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This activity was designed for blind learners, but all types of learners can participate to learn about conservation of gas. This is one of the classic experiments using baking soda and vinegar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-298.jpg?itok=qn-nwFls)
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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-601.png?itok=Og6uAZtW)
Small Habitats
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In this activity, learners build a model of a self-sustaining habitat (growing grass and beans from seeds).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-909.jpg?itok=QXznwnQz)
Energetic Musical Instruments
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Learners design and create musical instruments from common objects; their challenge is to create an instrument that can make three different tones.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-504.jpg?itok=yG8PeTKh)
Production of Hydrogen
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In this chemistry activity, learners use mossy zinc (or a galvanized nail) and hydrochloric acid to generate hydrogen gas and test some of its properties.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-895.jpg?itok=O2ptLFID)
Recycling Rules: Understanding Recycling and a MRF
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In this activity, learners simulate the separation techniques that materials recovery facilities (MRFs) use and then design their own series of recycling techniques.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-355.png?itok=vkeo80JL)
Como funciona un extintor
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In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-576.jpg?itok=VoY4sx49)
Soda Geyser
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In this quick activity (page 1 of PDF under SciGirls Activity: Lift Off), learners will use the ever-popular soda geyser experiment to test the reactivity of the various sugar candies or mints.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-995.jpg?itok=5WDwc-an)
Recycling Paper
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In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-489.jpg?itok=M3P9BX8D)
Witches' Potion Demonstration
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In this chemistry demonstration, learners will discover that phenolphthalein is an acid/base indicator. One learner will read a poem about four witches making a potion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-106.gif?itok=1-G2XemB)
Show Your Colors!
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In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-884.jpg?itok=dxYRVTjF)
Downhill Race
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In this activity, learners explore how two cylinders that look the same may roll down a ramp at different rates.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-329.jpg?itok=o0IWC_EZ)
Changing the Density of a Liquid: Heating and Cooling
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Learners investigate how the temperature of water affects its density.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-890.jpg?itok=5go5TJa8)
Wire Maze
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Learners create an electrical-circuit maze out of wire, then try to pass a paperclip through the maze without touching the wire.