Rhode Island Standards
RI.M:G&M:4. NECAP - Grade Level Expectation: Geometry and Measurement.
M:G&M:4:6. Demonstrates conceptual understanding of perimeter of polygons, and the area of rectangles, polygons or irregular shapes on grids using a variety of models, manipulatives, or formulas. Expresses all measures using appropriate units. (State)
M:G&M:4:7. Measures and uses units of measures appropriately and consistently, and makes conversions within systems when solving problems across the content strands. (State)