A computer-assisted course was designed to provide students with an understanding of modeling and simulation techniques in quantitiative ecology. It deals with continuous systems and has two segments. One develops mathematical and computer tools, beginning with abstract systems and their relation to physical systems. Modeling principles are next presented, with emphasis on compartment-flow models, followed by discussion of simulation. The FORTRAN IV language and the IBM 360 Continous System Model Program are then described in detail, and equilibria and stability are treated. In part two, students were burdened by the math required and the amount of time spent on programing languages. The first difficulty was overcome by the introduction of compartment-flow models, the second by the development of an easy-to-use computer program. This Compartment Flow Model Simulation Program (COFLO) is an input language which takes a description of a compartment-flow model and simulates the behavior of the modelled system, converting the model system into a FORTRAN program for compilation and execution. COFLO has been implemented on the UNIVAC 1106 computer at the Southeast Regional Data Center of Florida Atlantic and Florida International Universities. (LB)