The notion of scaffolding learners to help them succeed in solving problems otherwise too difficult for them is an important idea that has extended into the design of scaffolded software tools for learners. However, although there is a growing body of work on scaffolded tools, scaffold design, and the impact of scaffolding, the field has not yet…

This article proposes three guidelines for mobile technology design that address the needs and goals of teachers who are considered mainstream with regard to technology use. Devices should be easy to learn and use, focused on the curriculum, and instruction-friendly. Only if the three guidelines are followed by hardware and software developers…

Learner-centered software design (LCSD) guides the design of tasks, tools, and interfaces in order to support the unique needs of learners: growth, diversity and motivation. This paper presents a framework for LCSD and describes a case study of its application to the ScienceWare Model-It, a learner-centered tool to support scientific modeling and…

Describes the development of Model-It, a ScienceWare software tool developed by the University of Michigan in collaboration with high school science teachers to support learners in building qualitative models and then move to more quantitative models. Highlights include modeling versus simulation and assessing the impact of Model-It. (LRW)

This paper presents the results of a study of the cognitive strategies in which ninth-grade science students engaged as they used a learner-centered dynamic modeling tool (called Model-It) to make original models based upon stream ecosystem scenarios. The research questions were: (1) In what Cognitive Strategies for Modeling (analyzing, reasoning,…