## 3.3 **Measurement—Area, Including Problem Solving**

**Geometric measurement: understand concepts of area and relate area to multiplication and to addition.**

**Measurement and Data 3.MD**

3.MD.6 Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).

**Counting squares for area-click here**

__area of figures made of unit squares-click here__**3.MD.7 Relate area to the operations of multiplication and addition.**

__Area-square units and rectangles video-click here__

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.

d. 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.

**Operations and Algebraic Thinking 3.OA**

**Represent and solve problems involving multiplication and division.**

3.OA.3 Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.1

**Essential questions**

• How do you find the area of a rectangle using square units?

• How can you find the area of a shape made up of multiple polygons having right angles?

• How can you use multiplication or addition to solve problems involving area?

• How can you solve a multiplication problem with a symbol representing an unknown number?