Search Results
Showing results 21 to 27 of 27
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-353.gif?itok=sjo-_XBv)
Drop IT!: Depth Perception
Source Institutions
These two activities (4th on the page) demonstrate the importance of two eyes in judging depth.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-735.jpg?itok=YEd2ohv9)
Pinhole Magnifier
Source Institutions
In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-943.jpg?itok=Sf3u5wQg)
Thaumatropes
Source Institutions
In this activity, learners will make a thaumatrope, an old-fashioned optical illusion that dates back to the 1820s.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-666.jpg?itok=JKSu-jyv)
Disappearing Act
Source Institutions
Make a camouflage cut-out animal! Using patterned paper or magazine pictures from around the house, use your craft skills to make a paper animal that blends into its background.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-216.jpg?itok=mvlzsufR)
Whirling Watcher: Make a Stroboscope
Source Institutions
In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-064.gif?itok=qPHrfHoa)
Seeing Is Believing
Source Institutions
This activity is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Learners look through two cups with small holes in them to simulate what it'
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-213.png?itok=_zCsfrZv)
Size It Up
Source Institutions
In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid.