Karl Menninger (mathematics)
Encyclopedia
Karl Menninger was a German teacher of and writer about mathematics. His major work was Zahlwort und Ziffer (1934,; English trans., Number Words and Number Symbols), about non-academic mathematics in much of the world. (The omission of Africa
was rectified by Claudia Zaslavsky
in her book Africa Counts.)
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
was rectified by Claudia Zaslavsky
Claudia Zaslavsky
Claudia Zaslavsky was an American educator and ethnomathematician. She advanced the study of the links between mathematics and world cultures, especially with her pioneering book Africa Counts, that extended to Africa the work of Karl Menninger about mathematics in ordinary life in other parts of...
in her book Africa Counts.)