How Can Field Science Be Practically Implemented in the Classroom? By: Carol Lutz, Geoff Foster, Matt Mechler, Shelby Waterford, Clayton Klements, and Garritt. Abstract: Simulations are an effective means of bringing field work into the classroom when actual field work isn’t practical. We have developed a scale stream table model to identify aspects of streams including bank-full width, pebble count, and maximum pool depth. The data is then used to determine which of three classes of streams--I, II, or III are represented along the length of our model stream. The purpose is to show how water flows from a primary source into a river, and what must be considered when determining community growth and the effects on water flow in a region.