Professor: Fractions should be scrapped


"Fractions have had their day, being useful for by-hand calculation," Dennis DeTurck said as part of a 60-second lecture series. "But in this digital age, they're as obsolete as Roman numerals are."

USA TODAY
January 23, 2008
By Maureen Milford



PHILADELPHIA — A few years ago, Dennis DeTurck, an award-winning professor of mathematics at the University of Pennsylvania, stood at an outdoor podium on campus and proclaimed, "Down with fractions!"

The speech started a firestorm, particularly after the university posted it online.

"There were blogs and rants, and there were some critical e-mails," said DeTurck, who is now dean of the college of arts and sciences at Penn. "They'd always boil down to: 'What would we do in cooking and carpentry?' "

DeTurck is stirring the pot again, this time in a book scheduled to be published this year. Not only does he favor the teaching of decimals over fractions to elementary school students, he's also taking on long division, the calculation of square roots and by-hand multiplication of long numbers.

"Mathematicians are always questioning the axioms. Everybody knows that questioning those often results in the most substantial gains in terms of progress," he says.

Questioning the wisdom of teaching fractions to young students doesn't compute with people such as George Andrews, a professor of mathematics at Pennsylvania State University and president-elect of the American Mathematical Society. "All of this is absurd," Andrews said. "No wonder mathematical achievements in the country are so abysmal.

"Arithmetic is the basic skill. If children do not know arithmetic, they can't go on to algebra, which leads to calculus. From there you go on to other things," Andrews said. "It's fine to talk about it, but this is not a good pedagogy."

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Posted: Wed - January 23, 2008 at 12:45 PM          

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