Math - 2018-19
4.7 - Perimeter and Area
The student will
- solve practical problems that
involve determining perimeter and area in U.S. Customary and metric units.
Doctors measure our height to see how tall we have gotten.
Linear measurement is key when finding area, perimeter, or volume. If we want to buy a rug, paint a wall, or frame a picture, we have to measure in order to know how much to buy.
Scientist use linear measurements when collecting data on experiments.
- Measurements also help students to understand the concepts of fractions. When we are using measurement tools such as a ruler we are practicing how to use fractions on a number line.
UNDERSTANDING THE STANDARD
- Perimeter is the path or distance around any plane figure.
- To determine
the perimeter of any polygon, determine the sum of the lengths of the sides.
- Area is the
surface included within a plane figure.
Area is measured by the number of square units needed to cover a surface
or plane figure.
- Students should have opportunities to investigate and discover, using manipulatives, the formulas for the area of a square and the area of a rectangle.
- Area of a square = side length × side length
- Area of rectangle = length × width
and area should always be labeled with the appropriate unit of measure.
The student will use problem solving, mathematical communication, mathematical reasoning, connections, and representations to
the perimeter of a polygon with no more than eight sides, when the lengths of
the sides are given, with diagrams.
the perimeter and area of a rectangle when given the measure of two adjacent
sides, with and without diagrams.
the perimeter and area of a square when the measure of one side is given, with
and without diagrams.
- Solve practical problems that involve
determining perimeter and area in U.S. Customary and metric units.