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Peer reviewedSpurgin, C. B. – Physics Education, 1983
Compares various methods of defining derived quantities, arguing for a definitional formula using base or fundamental units in a word equation, or symbol-equations with the symbols explained. Suggests that fundamental units be defined operationally or left regarded as intuitive as in the case of length and time. (JM)
Descriptors: Concept Formation, Definitions, Equations (Mathematics), High Schools
Childs, Roy – 1976
The norm-referenced score scale used by the National Foundation for Educational Research (NFER) is described. The usefulness of standardized scores is explained by a simple numerical example, and the formulas and computations are shown for calculating a mean, a standard deviation, and a deviation or z score. The need for a representative sample is…
Descriptors: Computation, Foreign Countries, Guides, Mathematical Formulas
