This math topic focuses on calculating the perimeter of a rectangle. It introduces the concept of perimeter through seven practice problems that require finding the total length of all four sides of various rectangles. Each problem uses a different rectangle, and students are presented with multiple choice answers to select from. This allows students to strengthen their understanding of adding up the lengths of straight-line shapes and applying this knowledge to real-world geometric figures. The problems are appropriate for beginners, helping them to grasp the initial concept of perimeter in geometry.