Get your timer out and see whether you can remember the golden rule from grade school math class.

People often solve simple arithmetic problems, such as basic addition, subtraction, multiplication or division, in their minds. The precise mental processes they rely on to solve these problems, ...

Get out your timer and number two pencil to see if your arithmetic skills are still sharp.

Solving arithmetic problems, even simple subtractions, involves mental representations whose influence remains to be clarified. Visualizing these representations would enable us to better understand ...

Jackson Ryan was CNET's science editor, and a multiple award-winning one at that. Earlier, he'd been a scientist, but he realized he wasn't very happy sitting at a lab bench all day. Science writing, ...

Exploring concepts such as observation and measurement in the fresh air can give students a new and playful perspective on ...