Abstract
TEACHEBS who have difficulty in explaining geographical and astronomical phenomena which involve motion in three dimensions may find that a model illustrating the phenomenon is much more intelligible to the pupil than is any blackboard drawing intended to represent three dimensions.
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A ‘Sun-Path Demonstrator. Nature 132, 927 (1933). https://doi.org/10.1038/132927c0
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DOI: https://doi.org/10.1038/132927c0