Describes nine biology experiments, including osmosis, genetics; oxygen content of blood, enzymes in bean seedlings, preparation of bird skins, vascularization in bean seedlings, a game called "sequences" (applied to review situations), crossword puzzle for human respiration, and physiology of the woodlouse. (CS)

Describes a computerized experiment in which the student determines the pk of an acid-base indicator from absorption spectra of the indicator at various concentrations. (MLH)

Contains information regarding pollen and human allergies. Lists most common types of pollen, describes pollen morphology, diagrams and apparatus for collecting pollen, and suggests laboratory activities such as pollen counts, pollen concentration, dispersal, and meteorological effects. (CS)

Presents two hydroboration-alkylation sequences, each requiring a three-hour laboratory period, that demonstrate the synthetic utility of the organoboranes. (MLH)

Describes the quantitative analysis of a gaseous mixture using peak heights and ratios between the peak heights. (MLH)

Described is a physics experiment in which carbon dioxide cartridges mounted on a wheel with a spark timer can be utilized to measure the energy release of the cartridges. (SL)

Describes the design, construction, and performance of a low-cost, transversely excited molecular nitrogen laser. Suggests simple experiments and demonstrations using this laser. (MLH)

Presented are five science teaching ideas including: (1) a method for anesthetizing frogs with Finquel, (2) a demonstration of gene drift utilizing poppet beads, (3) description of a successful school arboretum project, (4) the use of acrylic plastic for making science laboratory equipment, and (5) a description of a model cell made from Baggies.…

A discrepant event is a happening contrary to our current beliefs. Discrepant events are said to be useful in clarifying concepts. This is one of the interesting features of current theories of constructivism. The story of Mpemba's ice cream is quite well known, but it is the educational aspects of the experiment that are of interest in this…

Electricity is an important and challenging science topic at all school levels. Learners often have many difficulties in learning electricity. Previous attempts to overcome these difficulties have been rather one-sided, leaning only on one method at the time, and thus ineffective. As a solution, a learning environment which combines the strengths…

This report presents the status of programs designed to manage hazardous educational waste collections in secondary schools in the state of Illinois. Laboratory wastes, expired chemicals, unstable compounds, and toxic or flammable materials are accounted for in this document. The report contains an executive summary, a review of Illinois statutes…

The purpose of this safety manual is to provide a resource to help manage and minimize potential risks in science classrooms where students spend up to 60% of instructional time engaged in hands-on activities. Information on general laboratory safety, science equipment safety, safety with plants, safety with animals, safety with chemicals, field…

This collection of articles reprinted from other National Anti-Vivisection Society (NAVS) publications was compiled to educate the public on issues of importance to NAVS concerning companion animals. Topics covered include spaying and neutering, animal safety, pet theft, and the use of cats and dogs in research. The article on spaying and…

The consolidation of the theoretical concepts as well as the use and learning of experimental techniques that are compatible with the technological evolution has been the main goals in Thermodynamics and Heat Transfer and Thermal Systems Laboratories at Escola Politecnica of University of Sao Paulo. The infra-structure and experimental benches in…

This study investigated the effect of two different approaches to practical work on the procedural understanding of foundation level students at two historically similar universities in South Africa, the University of Cape Town (UCT) and the University of the Witwatersrand (Wits), both of which run programs to improve the access of disadvantaged…