For six hours every day after school, Nahideh works in a cemetery, collecting water from a nearby shrine to sell to mourners ...

Pi Approximation Day occurs every July 22nd. It celebrates pi, a key mathematical constant. Pi relates a circle's ...

Mathematics with applications : in the management, natural, and social sciences by Lial, Margaret L Publication date 2007 Topics Mathematics -- Textbooks, Social sciences -- Mathematics -- Textbooks, ...