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Aguilar, Horacio Munguia; Landin, Ramon Ochoa – Physics Education, 2012
A simple electronic system for the measurement of high values of resistance is shown. This system allows the measurement of resistance in the range of a few megohm up to 10[superscript 9] [omega]. We have used this system for the evaluation of CdS thin film resistance, but other practical uses in the basic physics laboratory are presented.…
Descriptors: Physics, Science Education, Science Instruction, Measurement
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Brown, Bruce W. – Journal of Chemical Education, 1978
Data from this study suggest that evaluations of long-term accumulations of students' laboratory analyses should be standard procedure to detect deviations from the accepted true assays. Efforts are recommended to determine the cause of the error and the implications or grading procedures reconsidered. (Author/MA)
Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, Educational Research
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Sands, M. K.; Forrest, G. M. – Journal of Biological Education, 1981
Described is a procedure for assessment of student performance in laboratory work (practical work) in Advanced Level Biology in England. Some historical background is included. (PB)
Descriptors: Academic Achievement, Biology, Educational Assessment, Evaluation