Animations have become a ubiquitous component of computer-based instruction. Despite their widespread use, however, the evidence concerning their effects on learning is rather ambiguous, suggesting that one needs to have a closer look at the conditions under which animations will aid learning. Accordingly, three sets of moderating variables were…

Current cognitive multimedia design theories provide several guidelines on how to integrate verbal and pictorial information. However, the recommendations for the design of auditory texts (narrations) are still fragmentary, especially with regard to the characteristics of the voices used. In the current paper, a fundamental question is addressed,…

In this paper the augmentation of worked examples with animations for teaching problem-solving skills in mathematics is advocated as an effective instructional method. First, in a cognitive task analysis different knowledge prerequisites are identified for solving mathematical word problems. Second, it is argued that so called hybrid animations…