Outlines the highlights of experiments that allow students to trace the historical development of our understandings of cosmic rays. The experiments provide for two outdoor fieldwork experiences, indoor laboratory work, and an opportunity for a group of students to show originality and initiative. (ZWH)

Presents a simple, inexpensive, and effective activity that allows students to explore ecosystems. (ZWH)

Describes a simple, relatively inexpensive laboratory activity that allows students to examine the requirements for the fungal decay of wood and devise methods for prevention. (ZWH)

Describes the use of entomopathogenic bacteria for use in teaching general microbiology. (PR)

Describes an investigative laboratory sequence based upon the isolation and characterization of soil bacteria to aid microbiology teachers in providing students with activities that expose them to basic techniques of microbiology as well as demonstrates the scientific process and the experimental analysis of microorganisms. (ZWH)

Describes a hands-on activity in which the student's task is to design testing procedures and use appropriate formulas to meet the objectives of a two-dimensional projectile motion lab. (ZWH)

Provides real life assignments that can be used to help students apply chemistry laboratory techniques to solve environmental hazardous waste problems. Numerous diagrams are provided to aid in describing the experiments performed. (ZWH)

Uses extremely strong neodymium magnets to demonstrate several principles of physics including electromagnetic induction, Lenz's Law, domain theory, demagnetization, the Curie point, and magnetic flux lines. (MDH)

Presents the result of an empirical study on the reception and effectiveness of historical material being included in the physics program of a Swiss high school. (Author/NB)

Describes an experiment in which students work together in small groups, take data, and make a calculation to roughly determine the diameter of the blind spot in their eye. (WRM)

Describes an educational project primarily aimed at teachers and 15 to 18-year-old students that describes the essential features of a modern high-energy physics experiment. (Author/CCM)

Describes a laboratory activity in which students speculate about the extent to which Galileo actually performed an experiment to determine that all pendulums of a given length have the same period, independent of amplitude. (WRM)

Explains how a school developed a model for ensuring progression in experimental and investigative science. Provides progression steps and examples of models. (CCM)

Examines the impact of the national curriculum on secondary school science teachers' work in England and Wales. Finds that, in a significant number of schools, less time is spent on practical activities in the laboratory and students are presented with a narrower range of laboratory activities. Concludes that many teachers judge the national…

Suggests that scientific thought experiments (TEs) draw upon three epistemological resources: conceptual-logical inferences, visual imagery, and bodily-motor experience. Argues that TEs are powerful because of students' thought capabilities related to imagination and visual imagery. Claims that TEs are not currently exploited by school learning…