Search Results
Showing results 1 to 6 of 6
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-581.jpg?itok=VxkAzCkQ)
Vanishing Rods
Source Institutions
This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-543.jpg?itok=2Fxxf5SQ)
Lose a Glass in a Glass
Source Institutions
In this optics activity, learners use paint thinner to make a small jar seem to disappear inside a larger jar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-612.gif?itok=7y0IEX0t)
Afterimage
Source Institutions
In this activity about vision and optical illusions, learners conduct a simple test to demonstrate how our eyes create "afterimages." Learners stare at a black cardboard bat for at least 30 seconds an
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-324.png?itok=qn2n7CSP)
Magic Disc
Source Institutions
In this activity, learners create an optical illusion by spinning two attached cups. A round ball seems to magically appear when the cups spin.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-553.gif?itok=SiakAoYV)
Make Money Appear Before Your Eyes
Source Institutions
In this optics activity, learners use water to make a coin "appear" and "disappear." Use this activity to demonstrate how light refracts and introduce light as waves.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-302.png?itok=t0WLcOKH)
Arrows
Source Institutions
In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.