Imagine a classroom where students beam their assignments to the teacher instead of handing them in. Imagine a classroom where technology is ubiquitous yet nearly invisible. Imagine a classroom where all students simultaneously work together using technology. This is the reality for students in the fifth grade classroom of Jan Kelly, an elementary school teacher in Mogadore, Ohio, and one of the authors of this article. Kelly has been using handheld computers in social studies for more than two years for a variety of activities, including the study of economics by way of a simulated stock market, which is the focus of this article. (Contains 9 notes.)