YouTuber Kevin Lieber (who hosts the popular Vsauce2 series) has brought a classic math magic trick back from its ‘90s heyday. In the video, Lieber walks viewers through a magic trick where they ...

Add Yahoo as a preferred source to see more of our stories on Google. Math shouldn’t be harder than finding the last matching sock in your laundry. These clever shortcuts convert head-scratching ...

The room was silent except for the scribbling of pencils and flipping of math assessment papers. Michelle Chin's test was the first to turn over. Her speed surprised her a bit, as she'd never been ...