Select and use appropriate units, both customary and metric, strategies, and measuring tools to estimate and solve real-world area problems.

**Subject Area:**X-Mathematics (former standards - 2008)

**Grade:**4

**Body of Knowledge:**Geometry

**Big Idea:**BIG IDEA 3 - Develop an understanding of area and determine the area of two-dimensional shapes.

**Date Adopted or Revised:**09/07

**Date of Last Rating:**06/07

**Status:**State Board Approved

**Assessed:**Yes

### Remarks/Examples

Students should recognize that the area of a piece of paper might be measured in square inches, the area of a room might be measured in square feet, and the area of a large piece of land might be measured in square miles. Alternately, these measurements might be in square centimeters, square meters, and square kilometers, respectively.Example: Students find the area of a composite shape. An L-shaped region may be decomposed into rectangular regions.

Example: Find the area of the polygon in the picture. Explain or show how you found the area.

### TEST ITEM SPECIFICATIONS

**Reporting Category:**Geometry and Measurement-
**Item Type(s):**This benchmark will be assessed using: MC , GR item(s)

**Clarification :**

Students will find the area of a rectangle by multiplying the base by the height.

Students will solve problems involving the area of a rectangle or a composite shape composed of adjacent rectangles, such as L- or E-shaped figures.

Students will select appropriate units and/or tools to estimate and/or solve real-world area problems, (e.g., recognize that the area of a room is expressed as square feet, compared to an area of land expressed in square miles or kilometers).**Content Limits :**

Items may include figures with whole-number dimensions of 100 or fewer units.

Items will not include the formula for area of a rectangle.**Stimulus Attributes :**

Items may be on a grid, but this is not required.

Graphics should be used in most items.

Students may be required to use a ruler to measure the dimensions of a figure to determine its area.**Response Attributes :**

Responses may include incorrect units of measurement.

### SAMPLE TEST ITEMS (2)

**Test Item #:**Sample Item 1**Question:**C**Difficulty:**N/A**Type:**MC: Multiple Choice

**Test Item #:**Sample Item 2**Question:**Lana bought a patch in the shape of an “L” to sew onto the back of her denim jacket. The size of the patch is shown below.**in square centimeters**, of Lana’s patch?**Difficulty:**N/A**Type:**GR: Gridded-Response