IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Many nineteenth-century educators ...
THE invention of the decimal notation, which involves the use of zero and the assignment of local value to digits, made such an immense alteration in the character of arithmetical calculations that it ...
SEVERAL investigations have been carried out on the relative difficulties of learning the various ‘arithmetical facts’ or tautologies contained in the multiplication and addition tables. A variety of ...
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In the years before the Civil War, ...
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