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Experiment 1 where we varied time limit and question difficulty. The question in the left is less difficult versus the question in the right.

Experiment 1 where we varied time limit and question difficulty. The question in the left is less difficult versus the question in the right.

Source publication
Conference Paper
Full-text available
UpGrade is an open-source tool for A/B testing in educational software. We this study, we used UpGrade to run large scale online experiments in an educational game. Our experiments were aimed at increasing the student engagement. We experimented with various features of the game such as question difficulty, game narrative, feedback style, etc. to f...

Context in source publication

Context 1
... unit of the size was the percentage of the numberline. For this factor, the levels were 5, 10, 15, and 20 percent of the numberline (See Figure 4). We used experiment points setTimeLimit and setQuestionDifficulty in this experiment. ...