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.
Understand the area model of multiplication in relation to rectangular arrays.
Understand the difference between area and perimeter and when to solve for each.
Use models or pictures to derive the formulas for perimeter and area.
Apply the use of perimeter and area formulas to real world situations.
Find perimeter and area using addition or multiplication.
Use diagrams or models to solve real world problems involving perimeter and area.