Sophia Learning
Sophia: Metric Units of Weight: Lesson 1
The units used to describe weight in the metric system and introduced in this lesson. This lesson is part of a group of lessons about units of weight measurement. It is 1 of 5 in the series titled "Metric Units of Weight."
Other
Veritasium: The World's Roundest Object
The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram. The goal shown here is to eliminate the kilogram's dependence on a physical object. Two main approaches are being...
Bozeman Science
Bozeman Science: Factor Label Method
Mr. Andersen shows you how to use the factor label method to solve complex conversions.