In an ever-changing world, education must adapt to prepare children for the challenges of the 21st century. In a society where calculators and digital technologies are ubiquitous, mathematics ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. To teach children basic arithmetic, ...

This teaching abacus consists of a plastic frame with five columns of brightly colored translucent plastic beads, held together by shaped metal pieces. A crosspiece divides each column into two upper ...