Grade 3 · Measurement and Data

CCSS.MATH.CONTENT.3.MD.C.5a

A square with side length 1 unit, called "a unit square," is said to have "one square unit" of area, and can be used to measure area.

Read this standard on the official Common Core site

Lessons that teach this standard

• Area of a Rectangle: Length Times Width

  Why the area of a rectangle is length times width, how to find a missing side, why area uses square units, and how to handle L-shaped figures.