AAA Math
Aaa Math: Perimeter of a Rectangle
This resource shows students how to calculate the perimeter of a rectangle. It provides self-check exercises and simple learning games to practice the skill.
CK-12 Foundation
Ck 12: Elem Math: Perimeter of Squares and Rectangles
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on finding the perimeter of rectangles and squares.