Module 4: Eye and Vision
Didactic Framework: 2 worksheets, 1 factsheet, 1 Notes for Teachers In this module students learn the following:
To measure focal lengths Parts of a camera Parts of the human eye Function of each part Using thin lens formula to work out maximum and minimum focussing distances Accommodation in the eye and how it works Teamwork Relating tangible concepts (camera) with more abstract ideas (lens in the eye) Working with lenses and ray diagrams
In this module students compare the parts of a digital camera to the parts of the human eye and discover the function of each part and similarities and differences between the two. They measure the focal lengths of their own eyes and learn about ‘accommodation’ – the focussing mechanism of the human eye by performing experiments with long and short focal length lenses.