Beyond Applets: Introducing Mathwright Microworlds

It is my purpose in this short paper to describe a new type of web document that has recently made its appearance at the New Mathwright Library and Café (<http://www.mathwright.com>) and to discuss it in two lights: from the point of view of its readers (students of mathematics) and from the point of view of its prospective authors (teachers of mathematics). These documents are called Mathwright Microworlds.