The concept is basic.

Show. Tell. Do. Review.

The first link is an instructor (Mike Winkler) describing the process and what it accomplishes. It then shows the process being done. The second link is a software simulation. The student can walk through the exact same steps the instructor just showed. Any part can be repeated at any time to review the materiel. In 4 minuet sections the topics are easy to find. Try it yourself.