Pupils learn that a light source is something that produces (makes) light. The Sun is the biggest, brightest and best known light source. Pupils complete a sorting activity where they sort images of light sources from images of objects that reflect light. Once pupils have identified the light sources they have to try and place these in order from brightest light source to dullest. Pupils have to explain their groupings and light source orders.
This resource is available in the below packages.