This math chapter workbook on "Squares and Rectangles" reinforces the terms "length," "width," and "perimeter." Students will practice calculating the perimeter of a rectangle. Visual aids and physical models, like grid paper and manipulatives, can help students understand these concepts.

For example, one problem could ask students to find the perimeter of a square with a side length of 5 cm. To solve this, they would multiply the side length by 4 (since a square has four equal sides), resulting in a perimeter of 20 cm.