I ran a workshop at The Tetley in December during the Scientific Method exhibition, creating simple camera obscuras.
Probably not the best time of year to be creating an object that is heavily reliant on light, but we persisted all the same. I only had three families attend the workshop, which proved to be in our favour, as I could spend time with them, explain processes, and help with the construction. I enjoyed explaining how light travels, and cameras work (such is the science nerd deep within me).
Below are some images from the workshop and a instructions on how to make your own. One tip though, they work better in good light, so an overcast day is not the best day to experiment, and begin your understanding of how cameras work!
Click here to see the tutorial on how you can make you very own camera obscura