Sal Khan, of Khan Academy, solves the Perimeter of rectangle covered by 9 non-overlapping squares that is from 2000 American Invitational Math Exam. (09:56)

Derek Owens discusses how to find the perimeter of a figure. The ideas are explained and some example problems are worked through. From the pre-algebra course by Derek Owens. (02:32)

This video indicates it is for pre-algebra, however this would be good for anyone who is reviewing perimeter. This video would not be for the beginner, they use complex shaped figures. In this video they show and discuss how to find perimeter. To fin...d the perimeter you need to add up all the lengths of the figure. In this video they show how to find perimeter of odd shaped figures where some measurements are missing. Video is good quality and good for all students as review or initial learning of the concept.[more]

In this video, the instructor (who goes by the name jediteacher2007) shows several polygons (many-sided figures like hexagons and pentagons), and how to measure the distance around them (perimeter). The instructor uses computer software for instructi...on. Clear, step-by-step instruction. (8:28)[more]

This is a quick video defining perimeter and how to find it. It uses story problems as examples and takes the student through the thinking process of finding the perimeter. (02:45)

This slideshow was used as part of an introduction to perimeter in a third- grade measurement unit. This brief slideshow has 7 slides and is easy to understand.

From pbslearningmedia.org, produced by Thirteen/WNET New York

In this video segment from Cyberchase Inez competes in a rollerblading competition against Rimm, a skater for Team Hacker. Just before Inez skates, Hacker changes the shape of the field. It still has the same perimeter, but it is much narrower. The C...yberSquad decides to compare the perimeter and area of the three different fields they've had to skate on to make sure it is a fair competition. (4:21)[more]

From pbskids.org, produced by Thirteen/WNET New York

In this "Cyberchase" interactive game, players find out if two things with the same perimeter have different areas by creating a fleet of Cyber-spaceships using pieces of uniform length.

Please make your comments on categories positive, and not just negative.

People work hard on educational categories, and we want to encourage them to make more!

Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments
will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.

Personal criticism on project forums and in video content is not allowed and will be deleted immediately.
Any violations of this rule could result in expulsion from the project so please, no insults or other negative
personal remarks.

Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your
harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another
person's hard work, then be nice about it.

People work hard on educational categories, and we want to encourage them to make more!