Describes a simple, inexpensive modification that changes a brightfield microscope into a darkfield microscope, allowing low-contrast samples to be examined. (WRM)

Describes the construction and use of an inexpensive, portable photometer designed specifically for estimating population sizes in yeast cultures. Suggests activities for use with the photometer. (WRM)

Investigates the practices required for reading graphs in high school textbooks and scientific journals. Discusses the role of high school textbooks in the appropriation of authentic scientific graph-related practices. Finds that scientific journals provide more resources to facilitate graph reading and feature more elaborate descriptions and…

Discusses a study that revealed that science teachers, like their students, are capable of handling positive experimental results but fail to evaluate negative results appropriately. Describes a teaching strategy designed to help teachers develop an understanding of the concept of negative results and to apply the idea to different contexts.…

Defines six types of investigations: (1) classifying and identifying; (2) fair testing; (3) pattern seeking; (4) exploring; (5) investigating models; and (6) making things or developing systems. Challenges the dominance of fair testing in school science investigations. (Author/WRM)

Describes a review of research that addresses the effectiveness of simulations in promoting scientific discovery learning and the problems that learners may encounter when using discovery learning. (WRM)

Identifies middle school and college students' prior ideas about electrostatic induction. Presented students with observational evidence that supported or refuted their own prior ideas in an interview format. Concludes that the Lakatosian rather than the Popperian view is more acceptable in understanding students' responses to conflicting…

A laboratory practical examination was used to compare the investigative skills developed in two different types of general-chemistry laboratory courses. Science and engineering majors (SEM) in the control group used a traditional verification approach (SEM-Ctrl), whereas those in the treatment group learned from an innovative, inquiry-based…

In this article, the author talks about an inquiry-based activity involving yeast, wherein students learned about cell size. The activity allows students to employ math connections and to learn experimental techniques while practicing microscope skills. The activity can be adapted for students at all levels of biology. The author presents details…

The purpose of this study is to investigate how sixth graders develop inquiry skills to construct explanations in an inquiry-based learning environment. We designed a series of inquiry-based learning activities and identified four inquiry skills that are relevant to students' construction of explanation. These skills include skills to identify…

The paper reports findings from research into the extent to which an on-line course, "Try Science", achieved its objectives compared with a face-to-face course with the same content and objectives. "Try Science" has the dual aims of developing participants' understanding of science content and of teaching science through enquiry. Whilst the…

Science laboratory activities within secondary science have traditionally followed prescriptive outlines both in the structure and reporting of the activity. Building on current understandings of writing to learn science strategies, a Science Writing Heuristic has been developed that encourages students to examine laboratory activities much more…

"Real" science is about formulating and trying to solve practical and conceptual problems on the basis of shared beliefs about the world. Scientists build theories and test hypotheses by observation and experiment. They try their best to eliminate personal bias, and are "extremely canny in their acceptance of the claims of others" (Ziman, 2000).…

Students in the Electronics Engineering Technology program at Pennsylvania College of Technology designed and built a computerized dynamometer platform for testing dc brushless motors. As the capstone experience for EET-320, Measurement and Tests course, students were divided into teams of four and were given three weeks to complete the project.…

In this article, the author first provides the history of the wedding rice myth. He then details an interactive class activity that involved students in his large, non-majors biology classes. These students developed a series of experiments that scientifically determined if rice could be harmful to birds. Finally, he provides suggestions on how…