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Measuring Wind Speed
Source Institutions
In this indoor and/or outdoor activity, learners make an anemometer (an instrument to measure wind speed) out of a protractor, a ping pong ball and a length of thread or fishing line.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-967.jpg?itok=DwaHdqmF)
Height Sight
Source Institutions
In this activity, learners build a tool called an inclinometer that can find the height of any distant object, from a tree to the North Star.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-549.png?itok=zhl0aTJt)
Angle Hunting
Source Institutions
In this activity, learners use a hand-made protractor to measure angles they find in playground equipment.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-376.jpg?itok=GjUQul8u)
Zip Line Zoo
Source Institutions
In this activity, learners build a stuffed-animal zip line. Learners hold a cord against a wall, hook a cute stuffed animal onto it, let the animal slide down, and records its travel time.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-550.png?itok=d-udyYKX)
Pocket Protractor
Source Institutions
In this activity, learners create angle-measuring devices--protractors--out of paper. Learners follow a series of steps to fold a square sheet of paper into a triangular Pocket Protractor.