ALEX Learning Activity

  

My New Bedroom

A Learning Activity is a strategy a teacher chooses to actively engage students in learning a concept or skill using a digital tool/resource.

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  This learning activity provided by:  
Author: Michelle Frye
System:Blount County
School:Hayden Elementary School
  General Activity Information  
Activity ID: 2897
Title:
My New Bedroom
Digital Tool/Resource:
My New Bedroom - document
Web Address – URL:
Overview:

In this activity, students will solve a real-world problem involving perimeter. The task asks students to find the perimeter of their new bedroom. A diagram of the room is given, but students must determine the length of the missing sides to correctly calculate the perimeter.
  Associated Standards and Objectives  
Content Standard(s):
Mathematics
MA2019 (2019)
Grade: 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
Evidence Of Student Attainment:
Students:
  • Measure to find the perimeter of shapes.
  • Given a figure, determine the perimeter of the figure.
  • Given a figure with a missing side length and a given perimeter, determine the missing side length.
  • Solve real-world problems involving perimeters of polygons.
  • Use a multiplication expression to find perimeter of a polygon when all side measures of the polygon are equal.
Teacher 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.
Diverse Learning Needs:
Essential Skills:
Learning Objectives:
M.3.25.1: Define perimeter.
M.3.25.2: Recall the formula for perimeter (P= L+L+W+W or P=2L + 2W).
M.3.25.3: Recall basic addition and multiplication facts.
M. 3.23.4: Build and draw shapes to possess defining attributes.
M.3.25.4: Express the length of an object as a whole number of length units by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.
M.3.25.5: Describe measurable attributes of objects such as length or weight.

Prior Knowledge Skills:
  • Recall doubles addition facts.
  • Model written method for composing equations.
Alabama Alternate Achievement Standards
AAS Standard:
M.AAS.3.20 Find the area of a given shape using arrays (unit cubes and tiles) in relationship to multiplication. Limit units to 25.

Learning Objectives:

The students will be able to solve real-world problems involving finding the perimeter of polygons.

The students will be able to find the unknown side of a polygon when given the perimeter.
  Strategies, Preparations and Variations  
Phase:
During/Explore/Explain
Activity:

The teacher will give each student a copy of the task. The students are presented with the following scenario:

"You have just moved into your new home. Your mom has agreed to let you border your room with LED lights. Use the diagram of your room below to answer the questions." The students will use the diagram to find the perimeter. They will use what they know about rectangles to determine the lengths of the missing sides.

In conclusion, the students will answer the following questions:

  1. How many feet of LED lights will you need?

  2. If the lights come in rolls of 25 feet, how many rolls will you need?

  3. If the lights cost $19.23 each, how much money will you spend?
Assessment Strategies:

The teacher will observe student responses to determine student understanding of the concept and skill. The teacher can use the following guidelines to ensure students meet the learning objective.

Check that the student:

  1. can correctly determine the lengths of the missing sides.

  2. can correctly solve for the perimeter of the bedroom.
Advanced Preparation:

Each student will need a copy of My New Bedroom and a pencil.
Variation Tips (optional):

This task may be used as an individual assessment piece or students may work together in partners or groups.
Notes or Recommendations (optional):

This task may stand alone or be used with the following before and after activities:

Racing Around (Before)

What’s Missing? (After)
  Keywords and Search Tags  
Keywords and Search Tags: perimeter