Alabama Learning Exchange
Alex: Perimeter of Polygons
The purpose of this lesson is to learn how to find the length, or perimeter of a polygon in real world tasks.
Better Lesson
Better Lesson: Filling in the Middle
Students use both area and perimeter to work with geometric shapes.
Better Lesson
Better Lesson: 3 Digit Perimeters
Second graders work with 3-digit numbers as they solidify their understanding of the difference between perimeter and area.
Better Lesson
Better Lesson: Area of a Room: Basic Practice
Creating rooms with different dimensions but the same area improves understanding of multiplicative principles.
Cool Math
Coolmath: Precalculus Basic Formulas to Know
This CoolMath resource provides an introduction to some Precalculus formulas.
Better Lesson
Better Lesson: Perimeter of My Fence
A farmer needs a fence to keep the bunny out of his lettuce patch, but does he understand perimiter enough to buy the right amount?
Better Lesson
Better Lesson: How Big Is a Mile?
How far do I have to walk in order to make 1 mile? Students measure, add, and figure it out.
National Council of Teachers of Mathematics
Nctm: Illuminations: Scale Factor
Use this applet to investigate how changes in the scale factor influence the ratio of perimeters and the ratio of areas between two figures.
Shodor Education Foundation
Shodor Interactivate: Tables and Chairs
Explore perimeter through rectangular and straight-line arrangements of tables, calculating the number of chairs needed to surround different arrangements.
Math Open Reference
Math Open Reference: Semicircle
A handy reference guide to semicircles. It provides definitions and examples that enhance further explanation. Includes links to related topics.
Better Lesson
Better Lesson: Measuring With Quarter Inches
Third graders build measuring skills using quarter inch measurements.
Better Lesson
Better Lesson: Perimeter Measuring Around
This instructional activity focuses on the addition measurement of perimeter using real world examples.
Better Lesson
Better Lesson: Design a Space Using Area Models Day 1 and Day 2
Third graders use area models to find the total area of a store, home, or other real world space.
Shodor Education Foundation
Shodor Interactivate: Shape Builder
This activity operates in one of two modes: auto draw and create shape mode, allowing you to explore relationships between area and perimeter.
Better Lesson
Better Lesson: Jumping Into Math, Measurement & Data Day 2
Third graders create line plots and analyze data using measurement data with quarter unit fractions.
Better Lesson
Better Lesson: Unit 7 Pretest
What do students already know about geometry? What gaps do students have in their understanding? Students take the Unit 7 pretest in order to inform instruction.
Better Lesson
Better Lesson: What Is the Perimeter?
I can create polygons and find the perimeter by using the unit squares on my paper
Geometry Help
Geometry Help: Perimeter of Geometric Shapes
Explains the basic concept of the perimeter of geometric shapes with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Khan Academy
Khan Academy: Measure to Find Perimeter
Practice measuring side lengths to find perimeter.
Cuemath
Cuemath: Perimeter
A comprehensive guide for learning all about perimeter with definitions, how to find it, perimeter formulas, solved examples, and practice questions.
Math Open Reference
Math Open Reference: Perimeter of a Polygon
Learn about the perimeter of a polygon with this resource which offers detailed explanations, examples, and an interactive. Subjects covered include how to find the perimeter. Links to related topics.
Khan Academy
Khan Academy: Area & Perimeter on the Coordinate Plane
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane.
Better Lesson
Better Lesson: Area and Perimeter in Real Life, Day 2
Third graders build models wherein the area remains the same, while changing perimeters.
Homeschool Math
Homeschool Math: Perimeter
This video geometry lesson [6:14] explains the concept of perimeter and has varied exercises for students to practice.