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Holliday, William G.; Partridge, Louise A. – 1975
The purpose of this study was to evaluate a practical procedure for determining the optimum sequencing of pictorial classification tasks in science using mean difficulty indices generated by a standard sample of grade two students. Acquisition of such skills can affect the learner's performance on subsequent material and the teacher's efforts in…
Descriptors: Educational Research, Elementary Education, Elementary School Science, Instruction