#### 3.MD.B.4. Generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch. Show the data by making a line plot, where the horizontal scale is marked off in appropriate units–-whole numbers, halves, or quarters.

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#### 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.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.

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#### 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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#### 3.MD.C.7. Relate area to the operations of multiplication and addition.

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#### 3.MD.C.7.b. 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.

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#### 3.MD.D.8. Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.

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