There are many sources of light which help us see, and the biggest natural source of light is the sun. Before starting this exercise, ask your students to recall some of the sources of light that they know. Now, use this worksheet to explain to them that the more light a light source creates, the brighter it is and the more space it can light up. Help them identify the different light sources in the pictures and then check the brighter light source in each pair.
Note: You will not be billed until your free trial has ended and can cancel at any time. No strings attached.