MA19.3.20

Mathematics (2019) Grade(s): 3

MA19.3.20

Find the area of a rectangle with whole number side lengths by tiling without gaps or overlays and counting unit squares.

Unpacked Content

Knowledge

Students know:
  • area is a measurable attribute of two-dimensional figures.

Skills

Students are able to:
  • Find the area of a rectangle by tiling it without gaps or overlaps.
  • Measure the area of a rectangle by counting the number of unit squares needed to cover the shape.

Understanding

Students understand that:
  • Area is the number of unit squares needed to cover a surface.
  • Multiple unit squares can be combined to measure the area of rectangles so long as the unit squares completely cover the figure without overlapping each other or extending beyond the edge of the figure.

Vocabulary

  • Area
  • Rectangle
  • Tiling
  • Gap
  • Overlay
  • Unit square

Aligned Learning Resources

Area of a Parallelogram StudyJam
Commutative and Associative Properties of Addition
Creating Equal Shares
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