Exploratorium
Thread the Needle
If you are setting up a rotation lab where learners are investigating vision at different stations, this activity can be used to explore depth perception. Setting up a giant needle eye, students attempt to pass a pencil through it with...
Exploratorium
Exploratorium: Science Snacks: Perception
Try one of these 33 perception activities in your classroom.
Exploratorium
Exploratorium: Science Snacks: Thread the Needle
Learn about depth perception in this needle-threading activity.
Exploratorium
Exploratorium: Science Snacks: Size and Distance
An experiment in depth perception where you investigate how you perceive the size and distance of objects with one eye closed.
CK-12 Foundation
Ck 12: Life Science: Human Vision
[Free Registration/Login may be required to access all resource tools.] Sight, or vision, is the ability to see light. It depends on the eyes detecting light and forming images. It also depends on the brain making sense of the images, so...
Treehut
Suzy's World: Two Eyes
Use this site to find out why we have two eyes and how they work together.