Argument mapping is a way to visually show the logical structure of arguments. You break up an argument into its constituent claims, and use lines, boxes, colors and location to indicate the relationships between the various parts. The resulting map allows us to see exactly how each part of an argument is related to every other part.

By definition, an argument map is a visual representation of a complex or multi-layer argument that makes it easier to see the connections between the premises and the conclusion they support. By using an argument map, you should be able to determine whether the connections are logical, and if the argument is valid, sound, strong or weak.

Argument maps are commonly used in the context of teaching and applying critical thinking. The purpose of mapping is to uncover the logical structure of arguments, identify unstated assumptions, evaluate the support an argument offers for a conclusion, and aid understanding of debates.

Argument mapping is diagramming the structure of argument, construed broadly to include any kind of argumentative activity such as reasoning, inferences, debates, and cases.

Argument mapping gives students a visual way to break down and clarify their thoughts to see if they’re coming to the best conclusion. According to ReasoningLab.com: Argument maps are box-and-line diagrams that lay out visually reasoning and evidence for and against a statement or claim.