A link between visualization and prototyping that serves even non-programming members of the scientific and computing communities is presented. An environment is described in which nonlinear differential equations can be described in direct mathematical notation, and a solution graphic is the displayed result. Users can interact with the solution process at several points, from the initial problem statement to the application of number crunching using matrix solutions and relaxation iterations. The software is distributed. String input is parsed using a Smalltalk program, and an expert algebraic manipulation tool generates matrix blocks. The Smalltalk environment is used for output display. The paper also lists the command set and sample output graphs.