Search results for author:"Joseph S. Krajcik"
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A Research Strategy for the Dynamic Study of Students' Concepts and Problem Solving Strategies Using Science Software
Journal of Research in Science Teaching Vol. 25, No. 2 (1988) pp. 147–55
Describes a research strategy designed to examine learning and behavior when students interacted with microcomputers and software interfaced with a videotape cassette recorder (VCR). Utilized the VCR to record the video output from the microcomputer ...
Assessing the Nature of Learners' Science Content Understandings as a Result of Utilizing On-Line Resources
Annual Meeting of the National Association for Research in Science Teaching 1999 (March 1999)
The purpose of this study was to describe the depth and accuracy of sixth grade students' content understanding as a result of engaging in information seeking activities using Web-based resources in the University of Michigan's Digital Library....
The Effect of Level of Information as Presented by Different Technologies on Students' Understanding of Acid, Base, and pH Concepts
Within high school chemistry the topic of acids, bases, and pH is particularly challenging because robust understanding of the topic depends heavily on the student possessing deep concepts of atoms, molecules, ions, and chemical reactions. Since...
Science Education Vol. 90, No. 4 (July 2006) pp. 579–604
Holding the premise that the development of expertise is a continuous process, this study concerns expert models and modeling processes associated with a modeling tool called Model-It. Five advanced Ph.D. students in environmental engineering and...
Influence on Levels of Information as Presented by Different Technologies on Students' Understanding of Acid, Base, and pH Concepts
Journal of Research in Science Teaching Vol. 31, No. 10 (1994) pp. 1077–96
Involves secondary students in a study designed to allow investigation into how different levels of information presented by various technologies (chemical indicators, pH meters, and microcomputer-based laboratories-MBLs) affected students'...
Using Innovative Learning Technologies to Promote Learning and Engagement in an Urban Science Classroom
Urban Education Vol. 40, No. 4 (July 2005) pp. 446–472
Recent reform movements within the United States have called for science for all and educational reforms to support this goal. In light of these reform movements and concerns regarding learning within urban schools, science educators and policy...
The Impact of Designing and Evaluating Molecular Animations on How Well Middle School Students Understand the Particulate Nature of Matter
Science Education Vol. 94, No. 1 (January 2010) pp. 73–94
In this study, we investigated whether the understanding of the particulate nature of matter by students was improved by allowing them to design and evaluate molecular animations of chemical phenomena. We developed Chemation, a learner-centered...
Promoting Understanding of Chemical Representations: Students' Use of a Visualization Tool in the Classroom
Journal of Research in Science Teaching Vol. 38, No. 7 (2001) pp. 821–42
Investigates how students develop an understanding of chemical representations with the aid of a computer-based visualizing too called eChem that allows them to build molecular models and view multiple representations simultaneously. Involves 11th...
Science Scope Vol. 26, No. 3 (2002) pp. 18–21
Describes portable scientific laboratories that allow students to go beyond the classroom to do field work. Presents examples of a curriculum that incorporates portable technology and discusses its advantages in inquiry-based science programs....
Promoting Conceptual Understanding of Chemical Representations: Students' Use of a Visualization Tool in the Classroom
Annual Meeting of the National Association for Research in Science Teaching 2000 (Apr 29, 2000)
This study investigated how students develop their understanding of chemical representations with the aid of a visualizing tool, eChem, that allows them to build molecular models and simultaneously view multiple representations. Multiple sources of...
The Nature of Middle School Learners' Science Content Understandings with the Use of On-line Resources
Journal of Research in Science Teaching Vol. 40, No. 3 (2003) pp. 323–46
Investigates the depth and accuracy of 6th grade students' content understandings as well as the use of search-and-assess strategies when using on-line resources. Uses scaffolded curriculum materials while completing on-line inquiry units. Concludes ...
Research in Science Education Vol. 32, No. 4 (2002) pp. 567–89
Evaluates the scaffold designed as a dynamic modeling software tool called Model-It in terms of its ability to support learners' use of modeling practices. Discusses the continued empirical validation of types and instances of tool scaffolds. ...
Teaching and Teacher Education: An International Journal of Research and Studies Vol. 14, No. 1 (1998) pp. 33–52
This article describes the potential of new technologies for teacher professional development. The article examines literature on teacher knowledge and professional development and discusses how this literature can inform the design of three types...
Elliot Soloway; Amanda Z. Pryor; Joseph S. Krajcik; Shari Jackson; Steven J. Stratford; Michele Wisnudel; John T. Klein
T.H.E. Journal Vol. 25, No. 3 (1997) pp. 54–56
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...