This video explains how to find the area of a rectangle.
Source: Colleen on Guaranteach
This video explains how to find the area of a square.
Source: Colleen on Guaranteach
This video explains how to find the length of a side of a square given its area.
This video explains how to find the missing side of a rectangle given its area and another side length.
This video explains how to find the area of composite shapes made of squares and rectangles.