Maryland College and Career-Ready Standards
MD.MA.3.MD. Measurement and Data (MD)
3.MD.D. Geometric measurement: recognize perimeter as an attribute of plane figures and distinguish between linear and area measures.
3.MD.D.8. Additional Standard: Solve real-world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.
3.MD.D.8.1. Knowledge that the perimeter is the distance around a region.
3.MD.D.8.2. Ability to use manipulatives and visual models to find the perimeter of a polygon.
3.MD.D.8.3. Ability to apply a variety of strategies to find the perimeter of a polygon.
3.MD.D.8.5. Use understanding of perimeter to identify false reasoning and explain how to correctly find the perimeter of plane figures.