An Innovative Approach to Diagrams Representation: The Marlo Diagrams Web Page

In this work we present a web version of Marlo diagrams, which are an innovative way to visualize basic principles of logical reasoning, returning to the tradition of the Quantification of the Predicate. The page contains concise instructions, multiple examples of classical reasoning, and more than one hundred proposed exercises. Thus, it is a teaching resource that can be executed on computers, mobile phones, and tablets as an ICT tool for the development of critical thinking. We present the essential definitions of Marlo diagrams and their operations and provide JavaScript code examples to illustrate their implementation. We also present the line of research that we are currently working on to expand the scope of Marlo diagrams by adding disjunctions to their regions.