Light and Shadows (Genova, 5:41)
Determining the length of a shadow on a screen, or doing similar calculations.
Can They See Each Other? (Genova, 2:56)
When given the placement of two people and a flat mirror, determine if they can see each other.
Where Should the Mirror Go? (Genova, 3:20)
Given two people's locations in a room, where would you place a flat mirror so they can see each other?
Refraction (Genova, 5:58)
How to determine if lights speeds up or slows down when it enters a new medium, and which direction will it bend.
Investigating an Unknown Medium (Genova, 3:55)
Using the Phet simulator to estimate the index of refraction of an unknown medium.