Problems in Randomization of Online Question Banks (Case Studies).

At the University of Pécs (Hungary) mathematics courses are the basis for programs such as engineering and computer science. An online question bank was developed for university students to practice mathematical problem-solving and to use for exam assignments. Computer-aided test and assessment is widely used to support the teaching and learning of mathematics. In the research some aspects of question design were asked about the new possibilities of randomizing the question:: 1. What type of randomization is useful to introduce, and what are the limits of randomization? 2. Why is it sometimes so dangerous, what are the benefits, and what are the limits of it? 3. What type of math problems can be solved using random variables? 4. How can we ensure equal difficulty for the variation of questions? In our paper, some case studies of the task design are presented. The examples are from courses in mathematics at BSc and MSc levels, as well. [ABSTRACT FROM AUTHOR]