The present investigation was designed to determine if the learning benefits of metaphors and graphics could be combined into one instructional device--a metaphorical graphic--to aid in the acquisition of difficult concepts of chemistry. The authors further sought to determine if metaphorical graphics could foster greater retention of the basic…

Investigated the effects of presentation format (animation, still graphics, text) and the students' prior knowledge on learning a computer-based physics lesson in grades eight and nine. Results of an analysis of covariance indicated that specific presentation formats are not equally effective for the different prior knowledge groups. (Author/LRW)