Certainty-Based Marking (CBM) in Moodle: History & Options

Certainty-Based Marking rewards students for distinguishing between uncertain and reliable answers and thereby encourages deeper thinking about issues surrounding each question. The principles and outcomes are set out in my teaching publications. The system (LAPT) that I devised in 1994 for physiology and maths teaching at UCL, has now evolved to a more flexible system, purpose-designed for CBM Selftests.

Moodle is an open-access Learning Management System, widely used in many contexts. Since 2007, I have provided code modifications for current Moodle versions, available for download. They are simply copied into an installation and can be subsequently restored if required. There have been no reported adverse events with any of these downloads, and they don't affect function when CBM is not in use. Moodle documentation for CBM is available on the official Moodle site. Since 2012 (versions 2.6, 2.7) standard Moodle has included an interface incorporating student feedback for CBM. An additional PLUGIN is still required for data reports for staff, and some additional code modifications improve functionality and feedback for students, particularly if CBM has been turned on and off during the life of a quiz.

Specific Features for different Moodle versions Possible improvements in CBM that could still improve Moodle 2.6+ (most included with code modifications in earlier versions) : Cautions Recent forum discussions about CBM in Moodle
Certainty Based Marking in Moodle (Isabelle Langeveld's blog) 2011
Marks, accuracy and CBM, 2013
Removing CBM bonus/penalty from a quiz grade, 2014
CBM - Change Penalties, 2014
Truncation of Grades in the Gradebook, 2014

Tony Gardner-Medwin (UCL) email   Home Page  
Revised August 2014