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Paint by the Numbers
Source Institutions
In this pencil and paper activity, learners work in pairs and simulate how astronomical spacecraft and computers create images of objects in space.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-525.gif?itok=rr8BYLdL)
Finding the Size of the Sun and Moon
Source Institutions
In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.
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Sensory Hi-Lo Hunt
Source Institutions
In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-312.png?itok=NTdYbG5m)
Wintergreen
Source Institutions
In this outdoor, winter activity, learners find living green plants under the snow and determine the light and temperature conditions around the plants.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-762.jpg?itok=d_AtRvWj)
Blue Sky
Source Institutions
In this optics activity, learners explore why the sky is blue and the sunset is red, using a simple setup comprising a transparent plastic box, water, and powdered milk.