Intro to Perimeter for Kids: How to Find the Perimeter of Polygons - FreeSchool
https://patreon.com/freeschool - Help support more content like this! Perimeter is the distance around the outside of an object. It is easy to find the perimeter of objects with straight sides - or polygons - all you need to do is add up the lengths of the sides!
Tutorial: How to use a metric ruler
A brief tutorial on the use of a metric ruler.