Forget the upcoming presidential election or Madonna's new movie. The next time you want to pick an argument with someone, tell them our country's schoolchildren should be using pocket calculators ...

There are two basic ways to do fractions on your iPhone calculator. Here's what you need to know to use the built-in app.

The method to divide fractions is to keep the first fraction the same, turn the divide sign into a multiply and turn the second fraction upside down. This is known as multiplying by the reciprocal.

Calculators are useful tools in elementary mathematics classes, if students already have some basic skills, new research has found. The findings shed light on the debate about whether and when ...