Third Grade Geometry 2 - Right Angles Powerpoint Lesson is powerful when used as direct instruction in the classroom, on-line or individually. It teaches students how to Identify right angles and how to classify angles in relation to right angles. In addition, students can find right angles on shapes and in pictures. There are 22 strategies of effective teaching based on research in this powerpoint lesson. For best results, students should have white boards and dry erase markers. Includ