This easily built classroom apparatus is ideal for gaining a better understanding of how earthquakes work and how they are recorded. The apparatus consists of a heavy object that is dragged steadily with an elastic cord. Although pulled with a constant velocity, the heavy object repeatedly slides and then stops. A small vibration sensor, attached to a computer display, graphically monitors this motion, which mimics the intermittent fault slippage that characterizes earthquake fault zones. Slides from a talk given at the Geological Society of America’s Cordilleran Section Centennial meeting on June 2, 1999, show how this table-top demonstration can be used to help meet many of the K-12 teaching goals described in Benchmarks for Science Literacy (American Association for the Advancement of Science, 1993).