Search Results
Showing results 1 to 6 of 6
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-114.png?itok=FVP_cDKJ)
Star Power
Source Institutions
In this activity, learners create a star show and discover how they can prevent light pollution. Using simple materials, learners first design constellation boxes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-118.jpg?itok=3-FkNj2C)
Stroboscope
Source Institutions
In this activity (posted on March 20, 2011), learners follow the steps to construct a stroboscope, a device that exploits the persistence of vision to make moving objects appear slow or stationary.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-890.jpg?itok=5go5TJa8)
Wire Maze
Source Institutions
Learners create an electrical-circuit maze out of wire, then try to pass a paperclip through the maze without touching the wire.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-952.png?itok=vpuF--fP)
Telescoping Periscope
Source Institutions
In this activity, learners explore the many uses of periscopes and how this simple device was designed and is used in many applications.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-115.jpg?itok=TbgS2uc2)
Camera Projector
Source Institutions
In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-448.jpg?itok=ifbqzp4u)
Where Do We Choose to Live and Why?
Source Institutions
In this geography investigation, learners use a nighttime satellite image to observe areas of light across the United States and to identify patterns and spatial distributions of human settlements.