This lesson plan is designed for 4th-grade students to explore the concepts of geometry and symmetry. The objectives include defining symmetry, identifying symmetrical shapes and their lines of symmetry, and creating original symmetrical designs. The lesson begins with a discussion to introduce the idea of symmetry, followed by hands-on activities where students work in pairs to find lines of symmetry using mirrors and geometric cutouts. They will also design their own symmetrical shapes using construction paper and colored pencils. The session concludes with students sharing their creations and discussing the relevance of symmetry in art and nature. Assessment methods include observation during activities, evaluation of worksheets, and feedback on the students' designs. Extensions and differentiation strategies are provided to cater to varying learning needs and encourage deeper exploration of the topic.