This study compared physical and digital models of a scientific topic in order to determine representational competence, short- and long-term cognition, and the extent to which physical or digital interfaces enhance spatial ability. The DNA molecule was used as a representative spatial topic to investigate conceptual and spatial understanding.…

Statistical methods are an indispensable partner in all scientific work and in many other professional and commercial fields. So it is not surprising that statistics is widely studied at university. Yet most students never complete more than a single course in the discipline -- and that is usually early in their studies. In this situation…

The rapid advancement in the capabilities of computer technologies has made it easier to design and deploy dynamic visualizations in web-based learning environments; yet, the implementation of these dynamic visuals has been met with mixed results. While many guidelines exist to assist instructional designers in the design and application of…

This study examines the process by which system thinking perceptions develop within the context of a water cycle curriculum. Four junior high school students undergoing an especially designed inquiry-based intervention were closely observed before, during, immediately after, and 6 years after completing a year long systems-based learning program.…

Designing effective instruction is the goal of any instructional designer. This article discusses how lesson design can be enhanced by incorporating certain fundamentals of cognitive psychology. The stages of human information processing and a typical four-step lesson are integrated in a model that can inform instructional design. (Contains 1…

Describes the distributed practice technique to review course material. Results of a study to compare distributed practice to massed practice indicated that students using the distributed practice technique scored significantly higher when tested two months after practice was completed. (MDH)