"Rigor is a fundamental piece of any learning experience.
It is also among the most troublesome due to its subjectivity. What does it mean? What are its characteristics? Rigorous for whom? And more importantly, how can you use to promote understanding?
Barbara Blackburn, author of "Rigor is not a 4-Letter Word," shared 5 "myths" concerning rigor, and they are indicative of the common misconceptions: that difficult, dry, academic, sink-or-swim learning is inherently rigorous."
People do NOT remember 10% of what they read, 20% of what they see, 30% of what they hear, etc. That information, and similar pronouncements are fraudulent. Moreover, general statements on the effectiveness of learning methods are not credible---learning results depend on too many variables to enable such precision. Unfortunately, this bogus information has been floating around our field for decades, crafted by many different authors and presented in many different configurations, including bastardizations of Dale's Cone. The rest of this article offers more detail.