Begin with a discussion about visibility: Ask students to step outside and observe what they can see. Introduce the concept of light as a special kind of energy that allows us to see objects.

Explain the difference between natural and artificial sources of light. Use examples such as the sun, stars, and lightning for natural sources, and light bulbs and screens for artificial sources.

Discuss why we need light to see objects and how the absence of light leads to darkness.

Engage students in identifying sources of light around them, both in the classroom and at home. Discuss how these sources help us see in different conditions.

Conduct an experiment using a flashlight and various objects to explore how light helps us see. Students can observe changes when light is introduced to a dark space.

Have students complete a worksheet where they identify and label sources of light in different scenarios, reinforcing their understanding of natural and artificial light.

Facilitate a class discussion to review the concepts of light and darkness. Encourage students to share their observations and insights from the hands-on activity.

Reflect on the importance of light in our daily lives. Discuss how light impacts our ability to perform tasks and how it is used in various technologies.

Administer a quiz to assess students' understanding of the lesson. The quiz will cover topics such as sources of light, the necessity of light for visibility, and the distinction between light and darkness.

For further exploration, students can work on a project designing a device that uses light for communication, inspired by lighthouses.