Not everybody's brain is wired to make change or to count back change in their heads. I know that mine isn't. My wife, a retired third grade teacher, showed me a chart she used to teach the skill in her classroom. When she did it, I recorded it with my Flip video and then put it up on YouTube.
Every so often I get a comment from somebody reacting to the video. As adults, they are looking for help when they get to the cash register.
How many people have viewed it? As of this morning, more than 39,000.