How To Make A Pinhole Camera by seasonaldragon1.deviantart.com on @deviantART
Tutorials voor mijn site
Pinhole photograph made from a folded paper "camera" by Thomas Hudson Reeve
Camera Obscura construction -- these shoe box obscuras use a lens and so might be more appropriate for your class
Lights and Shadows - Grade 4 Science
digital pinhole camera
Pinhole Photography: Making A Wide Angle Pinhole Camera via lilblueboo.com --- How much fun would this be to do with the kids! A project for a rainy day :)
*great tutorial on how to make & use your very own super-retro pinhole camera!! XD by ~OmahaNebraska
Photography:Inspiration & Tutorials
Michael Wesely's beautiful 34 month exposures. The pinhole camera was not touched or tampered with at all during the exposure.
Make an Empty Paint Can Into a Pinhole Camera - Lomography
I like the hinge idea for a back. Easier to open/close to load film into, plus can make light-proofing nicer with a black curtain.
Pinhole Camera Ideas