Khan Academy
Khan Academy: Measuring Lengths 2
Sal demonstrates how to use a ruler while measuring various objects in centimeters and meters. Includes a video, transcript, and question and answer section. [4:39]
Math Mammoth
Math Mammoth: Measuring Length to the Nearest 1/8 Inch and in Cm/mm
Explains how to measure length using a ruler in inches and in metric units. [10:37]
Sophia Learning
Sophia: Converting Between Inches and Centimeters: Lesson 2
This lesson demonstrates conversion between inches, centimeters and millimeters. It is 2 of 3 in the series titled "Converting Between Inches and Centimeters." [3:19]