Im agree with this concept to teach our children to become a successful employee and businessman mentality. This two are both good because all things are starting with a small one before it becomes a larger one or lowest to highest. It is good that in their young age they know the value of money and how to handle it. Being business minded will help them to secure their future. But don't force them or push them to learn let them play at the same time because that is the nature of being a child.