Learning Activity

Perimeters of Pools

Subject Area

Mathematics

Grade(s)

3

Overview

During this learning activity, students will solve a real-life task that allows students to find the perimeter of several pools (polygons). Students will write equations and solve them to find the perimeter of several polygons. 

Mathematics (2019) Grade(s): 3

MA19.3.25

Solve real-world problems involving perimeters of polygons, including finding the perimeter given the side lengths and finding an unknown side length of rectangles.

Unpacked Content

UP:MA19.3.25

Vocabulary

  • Attribute
  • Dimension
  • Perimeter
  • Polygon
  • Two-dimensional

Knowledge

Students know:
  • Measurable attributes of objects, specifically perimeter.
  • Strategies for modeling measurement problems involving perimeter.
  • Strategies for representing and computing perimeter.

Skills

The Students are able to:
  • Solve real-world and mathematical problems involving perimeters of polygons.
  • Find the perimeter of a figure given the side lengths.
  • Find an unknown side length of a polygon given the perimeter and one missing side length.

Understanding

Students understand that:
  • Perimeter is measured in length units and is the distance around a two-dimensional figure.
  • If all the sides of a polygon are equal, then the perimeter can be determined by multiplying one side length by the total number of sides.

Phase

During/Explore/Explain
Learning Objectives

Learning Objectives

The students will solve real-world problems involving the perimeter of polygons.

Activity Details

  1. The teacher will display the "Perimeter of Pools" slides. 
  2. Before starting the activity, the teacher will show the title slide. The teacher will ask students, "What are you wondering? What do you think this problem is about?"
  3. The teacher will continue to go through the remaining slides. The teacher will need to make sure the students have their student notebooks for recording information. 
  4. The teacher will allow students to share their equations and answers to the questions on each slide. (This should spark a class discussion on finding the perimeter of polygons.)
Assessment Strategies

Assessment Strategies

The teacher will assess the students as they share their equations and answers to check for understanding. 

Variation Tips

  • This activity can be extended by asking the students the difference between the perimeter of the pools and the area. 
  • This activity can be extended by having the students draw their own pool polygon and have a partner find the perimeter of it. 

Background and Preparation

Background / Preparation

  • Students will need a student notebook for recording. If the teacher does not require a student notebook, the work can be done on a piece of paper or on digital form.
  • The teacher should preview the Perimeters of Pools task and provide a way to display the task. 

Digital Tools / Resources

https://docs.google.com/presentation/d/105UaaBNULeMrmIUx0lrMTwWQYJUUltdDfvGO25C…

Approved Date

Owner (Author)

scarver17
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