Unit 4: Multiplication & Area

In this unit students explore area as an attribute of two-dimensional figures and relate it to their prior understandings of multiplication.

Essential Questions:

  • How do I decide which measure to use to find area?
  • How do I choose the appropriate strategy to find area or perimeter of a shape?

Essential Understandings:

  • Students will understand people use measurement systems to estimate and show the perimeter and area of an object.
  • Students will recognize area as an attribute of plane figures and understand concepts of area measurement.
  • Students will understand that they can measure area by counting unit squares.
  • Students will relate area to multiplication and addition.

Skills the students will learn:

  • Finding the side lengths of a rectangle in units and multiply the lengths to determine the area.
  • Using the technique of decomposing rectilinear figures to find the area of each rectangle in order to determine the area of the entire rectilinear figure.
  • Finding the perimeter when given the length of sides.
  • Finding the perimeter when there is an unknown side length.
  • Designing, Creating, Drawing, Modeling, etc. rectangles with the same perimeter and different areas and/or rectangles with the same area and different perimeters.
  • Describing, analyze, and compare properties of two dimensional shapes.

Vocabulary:

  • Area (the amount of two-dimensional space in a bounded region)
  • Area Model (a model for multiplication that relates rectangular arrays to area)
  • Square Unit (a unit of area - specifically square centimeters, inches, feet, and meters)
  • Tile (to cover a region without gaps or overlaps)
  • Unit Square (e.g., given a length unit, it is a 1 unit by 1 unit square)
  • Whole Number

Websites:

Parent Helpers:


eureka_math_grade_3_module_4_parent_tip_sheet.pdf
Homework_Helpers_Eureka_Module_4.pdf