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(Created page with "This page relates to the work being done in MDL-32188. If that gets accepted into Moodle 2.4, then this page needs to be updated to say something like http://www.tmedwin.net/cbm/...")
 
(adding Tony M-G's CBM notes to the docs)
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This page relates to the work being done in MDL-32188. If that gets accepted into Moodle 2.4, then this page needs to be updated to say something like http://www.tmedwin.net/cbm/moodlecbm.htm
==Certainty-Based marking (CBM)==
*After each answer, you say how sure you are that your answer is correct.
*This is on a 3-point scale: C=1 (low), C=2 (mid) or C=3 (high)
*We don't rely on words like 'sure' or 'very sure' because these mean different things to different people
*The mark scheme and the risk of a penalty determine when you should use each C level:
 
==How CBM works==
[[File:cfmarks.gif|link=|]]
*Certainty levels 1, 2, 3  always give you marks 1, 2, or 3 when you are correct
*If you are wrong, then unless you opted for C=1 you will lose marks: -2 at C=2 and -6 at C=3
==Why use CBM?==
*To make students think about how reliable their answer is
*To encourage students to try to understand the issues,not just react immediately to a question
*To challenge: if a student won't risk losing marks if wrong then they don't really know the answer
*If a student is a careful thinker but not very confident. they will gain in confidence
*It is more fair - a thoughtful and confident correct answer deserves more marks than a lucky hunch
*Students need to pay attention if they make confident wrong answers: think,reflect, learn!
*Efficient study requires constantly questioning how our ideas arise and how reliable they are.

Revision as of 10:37, 11 November 2013

Certainty-Based marking (CBM)

  • After each answer, you say how sure you are that your answer is correct.
  • This is on a 3-point scale: C=1 (low), C=2 (mid) or C=3 (high)
  • We don't rely on words like 'sure' or 'very sure' because these mean different things to different people
  • The mark scheme and the risk of a penalty determine when you should use each C level:

How CBM works

cfmarks.gif

  • Certainty levels 1, 2, 3 always give you marks 1, 2, or 3 when you are correct
  • If you are wrong, then unless you opted for C=1 you will lose marks: -2 at C=2 and -6 at C=3

Why use CBM?

  • To make students think about how reliable their answer is
  • To encourage students to try to understand the issues,not just react immediately to a question
  • To challenge: if a student won't risk losing marks if wrong then they don't really know the answer
  • If a student is a careful thinker but not very confident. they will gain in confidence
  • It is more fair - a thoughtful and confident correct answer deserves more marks than a lucky hunch
  • Students need to pay attention if they make confident wrong answers: think,reflect, learn!
  • Efficient study requires constantly questioning how our ideas arise and how reliable they are.