This 4th-grade math lesson focuses on geometry and angles, specifically teaching students to identify and classify acute, right, and obtuse angles. The lesson begins with a discussion about angles and their importance in real-world contexts, followed by a visual presentation of the different types of angles. Students are guided through measuring angles using a protractor, working collaboratively to practice angle identification and classification on worksheets. They then create their own angles and accompany them with real-world examples on a poster. The lesson concludes with a sharing session where students discuss their work, reinforcing their understanding of the concepts presented. Assessment is conducted through the collected worksheets and group interactions, with differentiation strategies in place to support learners at varying skill levels. This engaging and hands-on lesson helps students connect geometry to their everyday lives.