Word: cubes
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Dates: during 1920-1929
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...teaching arithmetic, criteria of social utility should supplant old formal doctrine. "Useless processes": derivation of cube roots; common divisors and least common multiple beyond the power of inspection, metric system, troy and apothecary weights, complex and compound fractions, annual and compound interests...
...handling figures before Professor Boring's psychology class. Among his feats are the committing to memory of a series of 12 figures after viewing them for two seconds, ability to tell within 20 seconds the day of the week of any date in history, and ability to square or cube mentally any number up to 100. Mr. Greenough, who has travelled all over the country showing his talent, has secured a long list of endorsements for his work, including the signatures of many college professors, public officials, and expert accountants...
...week that followed, the Freshmen were put through a stiff scrimmage with the University team. To the surprise of all concerned, the cube gained several first downs against their opponents, and their backs got loose for several long gains...