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3.MD.C.5
3.MD.C.5
Recognize area as an attribute of plane figures and understand concepts of area measurement.
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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.
3.MD.C.5b
A plane figure which can be covered without gaps or overlaps by n unit squares is said to have an area of n square units.