During the day, the sun radiates bright light. At night, when it's time for bed, the sun sets and darkness takes over. To light our way, we use other sources of light. With your students, trace the dotted lines around the pictures of light sources and check the boxes under the objects that will cast shadows.
Teach your students about shadows with this printout. Ask them to check off the boxes next to the pictures that create a shadow. Explain that some objects block light, forming a shadow, while others don't and thus don't create a shadow. Your students are likely already familiar with their own shadow.