In this 4th grade math lesson plan, students will explore the concepts of geometry and angles, focusing on identifying and classifying angles as acute, right, and obtuse. The lesson begins with a discussion about angles in everyday life, followed by direct instruction that includes definitions and visual demonstrations on the whiteboard. Students will then engage in guided practice by creating and measuring angles using protractors and rulers. Afterward, they will complete worksheets that involve identifying angle types and practicing measurements independently. The session concludes with a review and optional extension activity that encourages students to find and document examples of angles and shapes in their environment. Assessment will include observing student participation and reviewing their completed worksheets to ensure understanding of the material. Overall, this lesson aims to foster a foundational understanding of angles and their applications in geometry.