This book contains simple experiments and projects through which students can learn about water and its properties. Some of the topics discussed include acid rain, dehydration, distillation, electrons, tidal waves, and the water cycle. Experiments include: finding out about the amount of water in the body; why there is water in the body; how to…

In investigative work, pupils encounter relatively open-ended tasks for which they have to devise their own solutions. Historically, the development of investigative work in the United Kingdom has come to the point where many schools are adopting it with some enthusiasm and with a degree of success. Progression has been largely defined by the…

The purpose of this study was to analyze the errors made by high school students in practical biology and the extent to which boys and girls differ in terms of the frequency of errors committed. The subjects included 317 students from the twelfth grade sampled from five different schools in Nigeria. A criterion level of 0.05 was set to test the…

Describes procedures for extracting nematodes from soil and culturing them for study and experimentation. (PB)

A presentation of findings from an experiment on six high school psychology classes that experienced 10, 20, or 30 minute programs presented on three screens with audio narration and music. Differences in learning retention were found, but with time passage, differences did not reappear. (Author/HB)

States the procedure for isolating actinomycetes from soil and testing for antibiotic growth. (LS)

Both teachers and students can use experimental research methods in the classroom. (JR)

This paper describes an experiment on the "linguistic" synthesis of a controller for a model industrial plant (a steam engine). Fuzzy logic is used to convert heuristic control rules stated by a human operator into an automatic control strategy. (Author)

Students attending Hoover Elementary School in Palo Alto, California enjoy their studies and classroom interaction. Article focuses on the policies behind the school's success. (RK)

Describes an experiment developed to study the velocity components of thermionic electrons, temperature-limited emission, cathode and anode work functions, and the contact difference in potential between cathode and anode. (Author/GS)

Author suggests that in increasingly difficult times for higher education, innovators need to take care in formulating problems, in proposing ways of tackling them and in costing these proposals. (Editor)

The changing structure of Southern farming amid the pressures of the farm crisis produces an information gap that has forced policymakers to rely on trial and error in institutional design. Existing data systems monitoring the farm sector either use the county as the primary observation unit, or they survey different individual farmers each year.…