About twenty years ago, Olgur Celikbas attended a conference on algebra in Turkey. He and his then girlfriend, Ela Özçağlar, had recently graduated from college in Ankara; both had studied math. At ...
Put down that calculator, teens — a new mental math component is part of the Grade 9 provincial achievement test (PAT) this year. Following Eggen’s move last year to add 15 calculator-free questions ...
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