An activity that uses dandelions to show the phenomenon of geotropism is described. The process of sedimentation, which causes the bending, is observed at moderate magnification under a standard microscope. A list of needed materials, directions for the tissue dissection, and time-lapse photographs of the process are included. (KR)

Describes alternative technology-based support services for at-risk students. Discusses at-risk students' academic needs and advantages of computer-aided instruction, interactive video, etc., in supporting learning. Profiles the use of technology-based modules at Florida State University to help students prepare for the College Level Academic…

Two surveys investigated the extent of photography instruction in dental schools. The first survey of 53 schools revealed that 36% had formal dental photography programs. Of 21 photography instructors surveyed in the second study, 67% had no formal training, many knew little about texts or resources, and techniques and knowledge varied. (MSE)

The campus laboratory school can play a vital role in the successful implementation of a reflective educator model of teacher preparation by providing sites where effective instructional procedures can be modeled by first-rate classroom teachers for the benefit of preservice students. (IAH)

Describes the development of a computer lab for freshman high school students. Questions to consider when planning a computer environment are suggested; software and hardware selection is discussed; room arrangements are considered; issues related to buying and installing software are described, including site licensing; and the computer…

A technique for the numerical identification of bacteria using normalized likelihoods calculated from a probabilistic database is described, and the principles of the technique are explained. The listing of the computer program is included. Specimen results from the program, and examples of how they should be interpreted, are given. (KR)

This article takes a critical look at practical work in school science and the often extravagant claims that are made for it. A case is made for a more rigorous, theory-driven approach to practical methods. (Author/CW)

Described is an interdisciplinary unit on pseudoscience which combines interest in unidentified flying objects (UFO's), physics, astronomy, art, and english composition. The different phases of the lesson, assignments, and evaluation are discussed. A list of books available on UFOs is provided. (CW)

Reports on ways in which interactive video-based courseware is being used with students studying for vocational qualifications at Thames Valley University (United Kingdom). Two alternative models using interactive video are described, one using multiple workstations and one using a single workstation led by a tutor. (Contains six references.) (LRW)

Describes the use of practice weighings and handling of fluorescent compounds to assist in teaching students safe-handling techniques. (PR)

Describes science experiments for undergraduate biology instruction on the concepts of mutation and characterization of the resulting mutant strains. The filamentous fungi "Fusarium moniliforme" is used to illustrate the induction of mutants (mutagenesis), identification of the mutated gene, construction of a biochemical pathway, and…

Explains how the tobacco mosaic virus can be used to study virology. Presents facts about the virus, procedures to handle the virus in the laboratory, and four laboratory exercises involving the viruses' survival under inactivating conditions, dilution end point, filterability, and microscopy. (MDH)

Examining living organisms in one's own backyard is a key first step toward appreciating the scope and importance of biological diversity throughout the world. The goals of this lab are to involve students in exploring the biodiversity around them, appreciating its scope, and asking questions of new organisms that they may never have noticed…

Describes InterLabs, a multidisciplinary computer laboratory developed at Bradley University (Illinois). Highlights include student leadership; experience-based learning; examples of work; a new curriculum called Social Informatics that addresses changes in society that follow technology changes; problems with administrative support and funding;…

Describes the development of an innovative, multimedia, interactive CD-ROM aimed at helping teachers tackle the problem that students have with evaluating science laboratory work. (Author/WRM)