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First/Geometry

Area of Rectangles

Find the area of rectangles using centimeters and feet.
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Study Guide

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Practice Questions

  1. Area of the shape?
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    (B) 20 square units

  2. Area of the shape?
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    (C) 8 square units

  3. Area of the shape?
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    (A) 12 square units

  4. Find the area.
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    (D) 6 square units

  5. Find the area.
    Show answer

    (B) 8 square units

Quick Tip
Tip: Area = length × width.
Teacher Resources
Teaching Notes

Introduce area as the amount of surface inside a shape. Emphasize using square units to cover the space.

Vocabulary
Rectangle: A shape with four sides and four right angles.
Length: The longer side of a rectangle.
Width: The shorter side of a rectangle.
Common Mistakes
  • Confusing area with perimeter calculations.
  • Miscounting unit squares, especially without a grid.
  • Forgetting to label the answer with square units.
Differentiation
SupportUse grid paper to count individual squares.
ChallengeExplore rectangles with larger or decimal side lengths.
Discussion Questions
  • How is finding the area different from finding the perimeter?
  • Why do we use 'square' units when measuring area?
  • Can two rectangles have the same area but different side lengths?
  • Where in real life might you need to calculate area?
Extension Activities
  • Draw rectangles with given areas.
  • Find area using different units.
  • Compare areas of different rectangles.
Parent Tip

Use a ruler to measure the length and width of a book cover.

Learning Path
Skill Cluster

Measurement & Geometry

Estimated Time

15 minutes

Skills Practiced
Calculate rectangle areaUnderstand area formulaVisualize area