Standard Description of 4.MD.3: Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.
Standards preceding 4.MD.3 are 3.MD.7, 3.MD.7.b, 3.MD.8, 3.OA.4. Standards that are taught after students master 4.MD.3 are 5.MD.5, 5.MD.5.a. The Lumos Coherence map for 4.MD.3 includes standards correlations, description and a list of apps, questions, videos, books and other resources related to 4.MD.3