This study examined the effect of a hypermedia-enhanced problem-based learning environment in astronomy on sixth-graders' science knowledge, attitude toward learning science, and motivation toward learning. It was found that the students had significantly increased their science knowledge from pretest to post test and also retained much of what…

Describes a study that examined the potential of a hypermedia-based expert tool to scaffold regular education sixth graders engaged in a problem-based learning program. Topics include cognitive apprenticeship support for problem-based learning; using hypermedia to offer expert modeling; attitudes toward the learning environment; and self-directed…

This article describes an innovative hypermedia product for sixth graders in space science: Alien Rescue. Using a problem-based learning approach that is highly interactive, Alien Rescue engages students in scientific investigations aimed at finding solutions to complex and meaningful problems. Problem-based learning (PBL) is an instructional…

In this study, we examined the use of cognitive tools provided in a problem-based hypermedia learning environment for sixth graders. Purposes were to understand how the built-in tools were used, and if tool use was associated with different problem-solving stages. Results showed that tools supporting cognitive processing and sharing cognitive load…