From YouTube, produced by Lawrence Perez
In this video they show to solve multiplication of fractions by cross canceling. They start with simple problems and do many different examples. Then they do addition of fractions with unlike denominators, they find the lowest common denominator, and apply this to solve the problem. Then they progress to a problem with four fractions. Then additional examples are done. Video is good quality and good for all students as review or initial learning of the concept.