Math: Geometry: Perimeter
These sites include activities and lesson plans for measuring perimeter. The sites include interactive exercises, quizzes, games, and worksheets. There are eThemes resources on area of polygons and circumference.
Grades
 3,
 4,
 5,
 6,
 7
Links

Length, Perimeter, and Area
This lesson can be used with your students to reinforce the concepts of length, perimeter and area. NOTE: This site includes ads.

Perimeter Explorer
This interactive activity allows students to practice determining perimeter for shapes in a variety of combinations. NOTE: This site includes ads.

Lesson: Perimeter
This is a lesson plan on perimeter that makes use of an online site. This is a fun activity for the SMARTboard. Click on "Perimeter Explorer" to begin the interactive activity.

Area and Perimeter
This PDF provides access to a set or perimeter/area cards for teachers to print out and use for additional practice in a center or guided practice activity

Math Video: Area and Perimeter
Review the concepts of area and perimeter with your students using this instructional video. (Total running time: 5:09). NOTE: This site includes ads.

Perimeter and Area of my Clubhouse
This PDF activity has students practice determining area and perimeter using geoboards.

Perimeter of a Parallelogram
This is an interactive site that allows you to practice measuring the perimeter of squares. Then you can check your answers.

Perimeter of a Square
This is an interactive site that allows you to practice measuring the perimeter of a rectangular and check your answers.

Perimeter of a Rectangle
This is an interactive site that allows you to practice measuring the perimeter of parallelograms. Check your answers. NOTE: The site has a link to a message board and includes ads.

Rectangular Area and Perimeter
This interactive site lets students explore the relationship between area and perimeter.

FunBrain: Game Finder
This site allows you to play an online game where you determine the perimeter of an object. Choose a game with numbers from under ten to up to 1000. NOTE: The site includes popup ads.

Perimeter
This site includes the formulas for the perimeter of different objects. NOTE: The site includes ads.

edHelper: Perimeter
Use this worksheet to practice finding perimeters of polygons.

edHelper: Perimeter: Find a Number
Use this worksheet to practice finding perimeter and sides of various polygons.

Finding the Fourth Angle of a Quadrilateral
Learn how to find the circumference, or perimeter, of a circle.

eThemes Resource: Math: Geometry: Area
These sites explain how to calculate the area of circles, triangles, rectangles, and parallelograms. Includes many practice problems and interactive games. There is also a link to blank grid paper so students can calculate the area of the shapes they draw.

eThemes Resource: Math: Geometry: Circumference
Learn how to calculate circumference of a circle also known as a perimeter of a circle. Find out what radius and diameter are and learn how to find their values. There are links to eThemes resources on perimeter and pi number. Includes an animation, interactive exercises, quizzes, and worksheets.