Common Core Math Standards 350+ math concepts in Kindergarten to grade 5 aligned to your child's school curriculum
Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.
3.MD.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.
