N.11. Grade 4 Curriculum Focal Points .

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Study GuideArea and Perimeter

WorksheetArea and Perimeter

WorksheetArea and Perimeter

WorksheetArea and Perimeter

WorksheetArea and Perimeter

N.11. Grade 4 Curriculum Focal Points

11.3. Measurement: Developing an understanding of area and determining the areas of two-dimensional shapes

11.3.1. Students recognize area as an attribute of two-dimensional regions. They learn that they can quantify area by finding the total number of same-sized units of area that cover the shape without gaps or overlaps. They understand that a square that is 1 unit on a side is the standard unit for measuring area. They select appropriate units, strategies (e.g., decomposing shapes), and tools for solving problems that involve estimating or measuring area. Students connect area measure to the area model that they have used to represent multiplication, and they use this connection to justify the formula for the area of a rectangle.

N.12. Connections to the Grade 4 Focal Points

12.2. Geometry: Students extend their understanding of properties of two-dimensional shapes as they find the areas of polygons. They build on their earlier work with symmetry and congruence in grade 3 to encompass transformations, including those that produce line and rotational symmetry. By using transformations to design and analyze simple tilings and tessellations, students deepen their understanding of two-dimensional space.

N.3. Geometry

3.1. Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships.

3.1.1. Identify, compare, and analyze attributes of two- and three-dimensional shapes and develop vocabulary to describe the attributes.

3.4. Use visualization, spatial reasoning, and geometric modeling to solve problems.

3.4.5. Use geometric models to solve problems in other areas of mathematics, such as number and measurement.

N.4. Measurement

4.1. Understand measurable attributes of objects and the units, systems, and processes of measurement.

4.1.1. Understand such attributes as length, area, weight, volume, and size of angle and select the appropriate type of unit for measuring each attribute.

4.2. Apply appropriate techniques, tools, and formulas to determine measurements.

4.2.4. Develop, understand, and use formulas to find the area of rectangles and related triangles and parallelograms.