Philadelphia teachers strike as talks yield partial deal
In Philadelphia thousands of teachers walked out over the weekend amid a push for longer hours, merit pay, and reduced seniority. After marathon talks a half hour extension to the workday was agreed and school resumed. Governors and unions eyed budget constraints as districts nationwide faced similar tensions over pay and accountability.
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Philadelphia
Bruce Haskin
Haskin
New York
Los Angeles
Boston
Buffalo
N.Y
Pennsylvania
Tom Ridge
New York City
Minesweeper Could Unlock P Versus NP Puzzle
Boston AP Minesweeper on large grids mirrors hard math problems and could reveal approaches to P versus NP the famed unsolved question. University of Birmingham professor Richard Kaye says solving mine placement algorithms could crack the problem and win the Clay Institute's 1 million prize.
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Boston
Richard Kaye
University of Birmingham
England
Kéeye
Kaye
Clay Mathematics Institute
Cambridge
Mass
Keve
Ian Stewart
University of Warwick
Arthur Jaffe
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