Perimeter of 2D shapes

Introduction

 

How to Find the Perimeter of Polygons ...

 

 

Welcome, Math Detectives!

Have you ever wondered how much fencing is needed to go around a garden or how much ribbon is needed to decorate a picture frame? In this WebQuest, you will learn about the perimeter of 2D shapes and discover how perimeter is used in everyday life.

By the end of this activity, you will be able to calculate the perimeter of different 2D shapes and solve simple real-life problems involving perimeter.

 

Task

Your task is to:

  1. Learn what perimeter means.
  2. Watch the videos and explore the websites provided.
  3. Calculate the perimeter of different 2D shapes.
  4. Complete the worksheet activities.
  5. Design a simple garden or playground and find its perimeter.
  6. Present your answers to the class.
Process

 

Step 1: Learn About Perimeter

Watch the videos provided by your teacher and read the information on the websites.

Step 2: Explore the Resources

Visit the websites and take notes on:

  • What perimeter means
  • How to calculate perimeter
  • The perimeter of squares, rectangles, and other polygons

Step 3: Practice

Complete the following calculations:

  1. A square has sides of 5 cm. Find the perimeter.
  2. A rectangle has a length of 8 cm and a width of 4 cm. Find the perimeter.
  3. A triangle has sides of 6 cm, 7 cm, and 5 cm. Find the perimeter.
  4. A pentagon has sides measuring 4 cm each. Find the perimeter.

Step 4: Real-Life Activity 

Design a small garden using a rectangle or square shape.

Draw the shape and label the measurements.

Calculate:

  • The perimeter of your garden.
  • How much fencing would be needed to go around it.

Step 5: Share

Present your garden design and explain how you calculated the perimeter.

 

 

Evaluation

Evaluation (15 Minutes)

Students complete the following questions:

  1. Find the perimeter of a square with sides of 7 cm.
  2. Find the perimeter of a rectangle measuring 10 cm by 6 cm.
  3. Find the perimeter of a triangle with sides 8 cm, 5 cm, and 7 cm.
  4. Explain what perimeter means.
  5. Describe one real-life use of perimeter.

Rubric

Criteria Marks
Participation 5
Research Activity 5
Calculations 5
Garden Design 5
Presentation 5

Total: 25 Marks

 

Conclusion

Conclusion (10 Minutes)

Teacher reviews the meaning of perimeter and discusses how it is used in everyday life.

Guided Questions:

  • What is perimeter?
  • How do we calculate perimeter?
  • Why is perimeter important?
  • Where can we use perimeter in real life?

Students share one new thing they learned during the WebQuest.

Homework

Measure the perimeter of one object at home (table, book, television, or room) and show your calculations.

Credits

Credits

The information and resources used in this WebQuest were obtained from the following sources:

Special thanks to these educational websites for providing resources that support mathematics teaching and learning.

Teacher Page

 

Title

Perimeter of 2D Shapes WebQuest

Grade Level

Grade 7

Subject

Mathematics

Duration

1 Hour 20 Minutes

Topic

Perimeter of 2D Shapes

Curriculum Connection

Students will develop an understanding of perimeter and learn how to calculate the perimeter of squares, rectangles, triangles, and other polygons.

Learning Objectives

By the end of this WebQuest, students should be able to:

  1. Define perimeter.
  2. Calculate the perimeter of common 2D shapes.
  3. Apply perimeter concepts to real-life situations.
  4. Use online resources to gather information.
  5. Work cooperatively with their peers.

Materials Needed

  • Internet access
  • Computer, tablet, or smartphone
  • Pencil
  • Ruler
  • Worksheet
  • Chart paper

Teaching Strategies

  • Guided instruction
  • Cooperative learning
  • Discussion
  • Problem-solving
  • Technology integration

Assessment

Students will be assessed based on:

  • Participation in activities
  • Completion of the WebQuest tasks
  • Accuracy of perimeter calculations
  • Real-life perimeter project
  • Responses to evaluation questions

Differentiation

For slower learners:

  • Provide additional examples.
  • Allow students to work in pairs.
  • Use visual aids and diagrams.
  • Offer teacher support during calculations.

For advanced learners:

  • Challenge students with irregular shapes.
  • Ask students to create their own perimeter problems.

ISTE Standards Connection

This WebQuest supports the ISTE Standards by encouraging students to:

  • Use digital resources for learning.
  • Solve problems using technology.
  • Collaborate with others.
  • Develop critical-thinking skills.

Credits

Resources used in this WebQuest include:

  • Khan Academy
  • Math is Fun
  • Math Playground
  • YouTube educational videos

These resources were used for educational purposes to support student learning.