David Schwartz's classic book "How Much Is a Million?" can be the catalyst for sparking many interesting mathematical investigations. This article describes five episodes in which children in grades 2-5 all heard this familiar story read aloud to them. At each grade level, they were encouraged to think of their own way to explore the concept of one million. During these investigations, which included whole-class, small-group, and individual projects, the children used many different mathematical concepts, such as place value, length, area, money, and ratio. All of the examples showcase children as active problem solvers who developed ownership of the problems they posed for themselves.