This week when 121,000 high school seniors file into classrooms around the country to take the calculus Advanced Placement examination, they will need to come armed with more than a couple of sharpened No. 2 pencils and a firm grasp of derivatives; they will also require the latest that math technology has to offer. Under new rules set by the College Board, all students who take the test must have a hand-held graphing calculator. Those who lack this powerful machine, which graphs complex equations, will have to sign a waiver stating that they will not challenge their scores if they do...
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