Grade 3 - Shape and Space
Standard 3.SS.5 - Find the perimeter of a complex figure.
Included Skills: Geometry
Demonstrate an understanding of perimeter of regular and irregular shapes by: • estimating perimeter using referents for centimetre or metre • measuring and recording perimeter (cm, m) • constructing different shapes for a given perimeter (cm, m) to demonstrate that many shapes are possible for a perimeter. • Achievement Indicators • Students who have achieved this outcome(s) should be able to: - Measure and record the perimeter of a given regular shape, and explain the strategy used. - Measure and record the perimeter of a given irregular shape, and explain the strategy used. - Construct a shape for a given perimeter (cm, m). - Construct or draw more than one shape for the same given perimeter. - Estimate the perimeter of a given shape (cm, m) using personal referents.