Shark Learning
Grade 6/Geometry

Perimeter of Rectangles

Calculate rectangle perimeters from given side lengths, including decimal measurements.
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Easy
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8 questions
2
8 questions
Medium
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8 questions
2
8 questions
Hard
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8 questions
2
8 questions
Quick Tip
Perimeter is the distance around the outside of a shape. Add all side lengths together: P = 2 × (length + width).
Teacher Resources
Teaching Notes

This collection focuses on perimeter of rectangles. Use grid paper to help students visualize area and perimeter.

Vocabulary
Perimeter: The total distance around a shape.
Rectangle: A four-sided shape with four right angles.
Common Mistakes
  • Confusing Area and Perimeter formulas
  • Forgetting to double the sides for Perimeter
  • Using wrong units (e.g., cm instead of sq cm for Area)
  • Confusing perimeter with area.
  • Forgetting to add all four sides.
  • Incorrectly applying formula.
  • Missing units in answer.
Differentiation
SupportHave students trace shapes on grid paper and count squares.
ChallengeChallenge students to find multiple rectangles with the same area but different perimeters.
Discussion Questions
  • What is the difference between Area and Perimeter?
  • Can two rectangles have the same perimeter but different areas?
  • Why do we use 'square' units for area?
  • What does 'perimeter' mean?
  • When do we use perimeter in daily life?
  • How is perimeter different from area?
  • Can two rectangles have the same perimeter but different dimensions?
Extension Activities
  • Measure the classroom floor area.
  • Design a garden with a specific perimeter.
  • Create art using only rectangles of specific areas.
Parent Tip

Measure the edges of a rug or table and add them up.

Learning Path
Skill Cluster

Geometry and Measurement

Estimated Time

20 minutes

Skills Practiced
Perimeter of rectangles