This project uses displacement goggles to help students actively learn about perceptual adaptation.
Students are taken to the gymnasium and given the goggles to use for the activity. Students first shoot a series of shots to determine their baseline ability, then shoot with the goggles on until they perceptually adapt, and then shoot with the goggles off until their original vision adapts again.
This can easily be modified to fit inside your classroom (you could have kids shoot balls into the trash can, for example).
Worksheet includes directions and a score tally for students to keep track of their progress.