Area and Perimeter of Rectangles and Squares | Digital Math Lesson & Self-Marking ActivitiesEngage your third grade, 4th grade math class with this interactive lesson on Area and Perimeter of Rectangles and Squares. This amazing bundle of interactive lesson with self-grading activities will teach your upper elementary math class how to find the area and perimeter of squares and rectangles with ease! By the end of this unit, students will:Understand the definitions of area and perimeter and the