•  Chapter 9

    unit 9
    Area and Perimeter
          In Chapter 9 students first learn to count square units to find the area of plane figures.  This concept is then extended to finding the area of a rectangle by multiplying its length by its width.  Students will connect this product to the corresponding rectangular array and the multiplication facts.  For example, the area of a 3 cm by 2 cm rectangle is 3 cm x 2 cm using multiplication, and this product corresponds to 2 rows of 3 using the rectangular array.
          Students will make connections between multiplication and measurement by learning concepts of area and perimeter.  In finding area and perimeter, students are taught to use the units accordingly; square units such as square contimeters, square inches, square meters, and square feet for area, and centimeters, inches, meters, amd feet for perimeter.
         Students also learn to choose appropriate units of measure for area and perimeter of figures of different sizes.  Through this chapter, they are encouraged to explore and understand units used to find perimeter and area of figures, and analyze the relationship between them.
         Students will then be given the opportunity to apply the concepts of area and perimeter to solve real-world problems such as finding the length of fence required.  This will help prepare them for solving complicated area and perimeter problems of objects they would encounter in everyday life.  Students will combine their knowledge of shapes, multiplication facts, and their understanding of partitioning rectangles to find the area of complex shapes.

    Key Learning Objectives:

    • Area
    • Perimeter and Area
    • Extending Perimeter