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Oil Spot Photometer
Source Institutions
In this math activity related to light, learners assemble a photometer and use it to estimate the power output of the Sun.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-615.jpg?itok=zAbj8Au6)
Why is the Sky Blue?
Source Institutions
In this activity, learners use a flashlight, a glass of water, and some milk to examine why the sky is blue and sunsets are red.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-052.png?itok=MxZGObu_)
Film Canister Farming
Source Institutions
In this hands-on botany activity, learners sprout vegetables in film canisters.
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The Senses of "Unknown Creatures"
Source Institutions
In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.
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Earth's Energy Cycle: Albedo
Source Institutions
In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.