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Commmon Core Lessons - 3.MD.C.5 Common Core

CCSS.Math.Content.3.MD.C.5:

Recognize area as an attribute of plane figures and understand concepts of area measurement.

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.MD.C.5.B
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.

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