Watch Professor Harold's Video Flash Cards: Multiplication (1986) : Full Movie Online Free Give your youngsters a leg up in math class with this program led by Professor Harold that uses the same principles as old-fashioned flash cards to teach the fundamentals of multiplication. The medium of television brings a new level engagement to a time-proven teaching technique, and kids can control the pace at which they solve the problems that pop up screen by pausing and playing the program as necessary.