Camera Obscura - Working Model Eye (Sexto) By Elena

Elena's students build working models of eyes (camera obscura) in class using shoe boxes and tracing paper. 

Then they went out on a sunny day and tested them on the patio.  The construction is relatively simple but what you see inside the box - the world projected upside-down is weird and fascinating.  You can tie this in to the nervous system and the brain because the information that the eye collects is upside-down and the brain corrects it for us.  We don't see the world upside-down, our brain is too clever and adaptable for that.  Safety warning - Don't look at the sun!

Link to pdf:  Instructions and Information for Camera Obscura Activity