This file contains two potential designs for a petting zoo (as well as a recording sheet), and students have to use their knowledge of area and perimeter to determine the cost of each design. Then, considering both the cost and the space for the animals, they must decide which design they think is best and why. Students must also understand the difference between units and square units, as each distance unit on the design is 7 feet (making each square 49 square feet). Students must also practice two-digit by two-digit multiplication, as the lengths and widths of the exhibits are mostly two-digit numbers.
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
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.