3.MD.C.7

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- 3.MD.C.5Recognize area as an attribute of plane figures and understand concepts of area measurement.
- 3.MD.C.6Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).
- 3.MD.C.7Relate area to the operations of multiplication and addition.

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3.MD.C.7d

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- 3.MD.C.7aFind 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.
- 3.MD.C.7bMultiply 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.
- 3.MD.C.7cUse 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.
- 3.MD.C.7dRecognize 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.

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## 3.MD.C.7d

## 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.

5 Lesson(s)

### Design A Space Using Area Models - Day 1 and Day 2

3rd Grade Math »
Unit: Measurement

3rd Grade Math »
Unit: Measurement

### Area and Perimeter Review Using Legos - Days 1-5

3rd Grade Math »
Unit: Review for Testing

3rd Grade Math »
Unit: Review for Testing

### Area in Real Life With Irregular Polygons

3rd Grade Math »
Unit: Measurement

3rd Grade Math »
Unit: Measurement

### Finding Arrays In An Irregular Polygon

3rd Grade Math »
Unit: Measurement

3rd Grade Math »
Unit: Measurement

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