KlickerUZH deploys a spaced-repetition algorithm to improve the learning experience with Practice Quizzes, which we would like to introduce with this post.
To achieve mastery, repetition is key. However, already back in 1880, psychologist Hermann Ebbinghaus found that the way our brains remember things is not linear. His research showed that the interval between repetitions has a significant effect on how well data is memorized. The field of Spaced Repetition learning was born.
KlickerUZH uses a spaced-repetition algorithm inspired by ‘Algorithm SM-2, (C) Copyright SuperMemo World, 1991’. SM-2 remains widely used today in various forms, with many applications, including the popular learning app Anki, using modified versions of the algorithm.
For Practice Quizzes in KlickerUZH, the spaced-repetition algorithm calculates the order in which the questions are presented, individually for the student.
Questions that have not yet been answered are given priority. All other questions are sorted according to previous answers.
In general, questions answered incorrectly, or only partially correct, will reappear earlier than questions answered correctly. The more often a question is answered correctly, the further back in the pile it moves.
This Spaced Repetition approach is designed to improve the students’ learning curve.
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