Maple Flow is a mathematics tool that makes it easy for engineers to brainstorm, develop, and document their design calculations. Combining a simple, freeform interface with a comprehensive math engine, Maple Flow provides a whiteboard-style environment that automatically keeps calculations live as users refine, reposition, and develop their work. A useful tool for engineers everywhere, in the engineering classroom, Maple Flow offers a clean, simple environment for examples, what-if scenarios, quick scratchpad calculations, and full assignments. This talk will include an introduction to Maple Flow, and showcase many examples from different engineering domains.