Common Core State Standards
CCSS.MATH.CONTENT.3.MD.C.5.A
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.
3 teaching
resources for those 'aha' moments
teaching resource
Area of 2D Shapes — Poster Set
Use this set of posters to teach how to find the area of 2D shapes.
teaching resource
Perimeter and Area Poster
A poster that explains and compares the concepts of perimeter and area.
teaching resource
Area and Perimeter Word Problems
A collection of 13 area and perimeter word problems with answers.