This document provides an introduction and lesson plan for a science class on light energy. The objectives are to describe light energy, perform activities in groups, and discuss the importance of energy in daily life. The lesson will include reviewing what students know about light, classifying types of light energy, demonstrating light energy through activities, and discussing how life on Earth depends on the constant supply of energy from the sun. Worksheets are provided for students to identify sources of light energy or make a slogan about its importance.