From YouTube, produced by Lawrence Perez
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 find 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.