New: Rationale Online at

Working with the argument maps that are at the heart of Rationale has been shown to produce a dramatic increase in students’ critical thinking ability. Rationale is a software tool that helps students grasp the essence of good essay-writing: structure.
Video: Plan and write a great essay with Rationale
(3 min; click “Full Screen” icon to enlarge)

Which activities?

Rationale is great for:

Which subjects?

Rationale is especially useful across tertiary and secondary education in situations in which teachers ask students to provide reasons, objections and rebuttals and evidence for whatever claim they make, for example in subjects like Law, English, Social studies, History and Philosophy.

What’s in it for teachers? The methodology Critical Thinking with Rationale