Teacher uses whiteboard for working through three example problems for converting units. Last one is a % problem, may not be applicable for this class at the beginning.
Great beginning video. Explains moles in addition to other units. However, have to sign-up for a free account to watch the rest of the video... maybe not a good one to use.
Two examples are worked through step-by-step.
Uses an algebraic equation (d=rt) to demonstrate unit analysis, first using units that cancel out and then using units that have to be converted. Good as a second level video after the basics are learned.