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.

Standard:

Math.3.MD.5b or 3.MD.C.5.B

Description:

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.

Standard:

Math.3.MD.6 or 3.MD.C.6

Description:

Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).

Standard:

Math.3.MD.7a or 3.MD.C.7.A

Description:

Find the area of a rectangle with whole-number side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths.

Standard:

Math.3.MD.7b or 3.MD.C.7.B

Description:

Multiply side lengths to find areas of rectangles with whole-number side lengths in the context of solving real world and mathematical problems, and represent whole-number products as rectangular areas in mathematical reasoning.

Standard:

Math.3.MD.7c or 3.MD.C.7.C

Description:

Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths a and b + c is the sum of a × b and a × c. Use area models to represent the distributive property in mathematical reasoning.

Standard:

Math.3.MD.7d or 3.MD.C.7.D

Description:

Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.

Standard:

Math.3.G.2 or 3.G.A.2

Description:

Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into 4 parts with equal area, and describe the area of each part as 1/4 of the area of the shape.