Plan Your Free Online Education at Lifehacker U: Summer Semester 2015

Your education doesn’t have to stop once you leave school. We’ve put together a curriculum of some of the best free online classes available on the web this summer for the latest term of Lifehacker U, our regularly-updating guide to improving your life with free, online college-level classes. Let’s get started. » 5/13/15 1:12pm 5/13/15 1:12pm

Math explains the best way to shuffle a deck of cards and why

Everyone who has played poker or even Go Fish knows the basics of shuffling cards. There's the riffle shuffle (combining two halves of a decks and making a bridge), overhand shuffling (quickly splicing cards from the deck back into the deck) and regular ol' mixing all the cards up on a table. Which way is the best? » 3/23/15 7:36pm 3/23/15 7:36pm

Genius app instantly solves math problems by using a phone's camera

I've seen the future and it is math less and it is awesome and it is this PhotoMath app that solves math problems just by pointing your phone's camera at them. It's like a cross between a text reading camera, a supremely sophisticated calculator and well, the future. Point and solve and never do math again. » 10/21/14 9:02pm 10/21/14 9:02pm

Keeping Bike Shares Running Smoothly Requires Seriously Complex Math

Here's kind of a dirty secret about bike share: Bikes don't end up distributed evenly across the system, so most cities use trucks and trailers to shuffle the bikes around to the kiosks where they're needed most at different times of day. Turns out it requires a complicated algorithm to determine exactly when and… » 8/27/14 7:15pm 8/27/14 7:15pm