Education research rarely lends itself to large scale experimental research and true randomization, leaving the researcher to quasi-experimental designs. The problem with quasi-experimental research is that underlying factors may impact group selection and lead to potentially biased results. One way to minimize the impact of non-randomization is…

The popularity of web-based learning systems has encouraged researchers to pay attention to several new issues. One of the most important issues is the development of new techniques to provide personalized teaching materials. Although several frameworks or methods have been proposed, it remains a challenging issue to design an easy-to-realize…

Educational software makers are often rebuffed by educational authorities, whose endorsements could lead to governmental stamps of approval, and thus explosive sales. But they usually get warmer receptions in the offices of the nation's school superintendents, who are, after all, their primary customers. The system was not supposed to work this…