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Category Archives: Recreational Mathematics
What Wish Would You Ask a Math Genie to Grant?
“If a genie offered to give you a thorough understanding of one theorem, what theorem would you choose?” blogger John D. Cook recently asked on his @AnalysisFact Twitter account. Responses ranged from the names of theorems to questions about the … Continue reading
Summer Time is Puzzle Time
It’s MidMay, that means it time to put away your serious things and time to start thinking about (what else?) math puzzles! Alexander Bogomolny, of CutTheKnotMath, has curated an amazing collection of math puzzles, problems, and interactive lessons. I always … Continue reading
Posted in Recreational Mathematics
Tagged Alexander Bogomolny, Mike Lawler, puzzles, The Riddler, xkcd
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Math Puzzles To Pass The Time
There are two types of people in this world: those that can only lie, and those that can only tell the truth. You might recognize that as the opening clause of so many knights and knaves problems. These are classic … Continue reading
The Lure Of The Rubik’s Cube
Who among us has not lost at least one afternoon of their life to that most seductive of toys: The Rubik’s Cube? Originally invented by the Hungarian architect Erno Rubik in 1974, this cube – although apparently not its patents … Continue reading
Math Games Might Be Sort Of Good For Your Brain
Good news, all that time you spent playing World of Warcraft might have made you smarter. A study out of Stanford just showed that playing video games just 10 minutes each day can make you better at math. The study … Continue reading
Posted in Math Education, Recreational Mathematics
Tagged Apps, Euclidea, Math Munch, ReTopo, Video Games
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In Praise of People Who Tell Us How to Play with New Toys
I’ve been thinking about getting a 3D printer for a long time but haven’t taken the plunge yet. Aside from the money, space, and inevitable proliferation of small plastic things to step on, part of me is worried I wouldn’t … Continue reading
It’s Not a Trick, It’s an Illusion
I’ve stumbled on the Best Illusion of the Year Contest a few times, but this is the first year I’ve thought about the illusions mathematically. Dave Richeson wrote two posts about this illusion by Kokichi Sugihara, one of the top … Continue reading
Posted in Recreational Mathematics
Tagged Dave Richeson, math, mathematics, optical illusions
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The Ramanujan Movie
I saw the Ramanujan Movie and I loved it. “The Man Who Knew Infinity,” came out a few weeks ago, starring Dev Patel as Srinivasa Ramanujan and Jeremy Irons as G.H. Hardy, it was a beautifully told story of what … Continue reading
Posted in Recreational Mathematics
Tagged Hardy, Ken Ono, Ramanujan, The Man Who Knew Infinity
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How to Celebrate Square Root Day
Apparently today, 4/4/16, is Square Root Day. (I supposed we could also have celebrated 4/2 to have a long Square Root Weekend.) How should a math enthusiast celebrate this holiday, which won’t come again until May 2025? Of course, one option … Continue reading
Counting Aloud And Other Saucy Things
The best reaction I ever had to telling someone I was a number theorist was “wow, so what’s the highest you’ve ever counted?” Being a number theorist, you can well imagine my response, first lots of laughter, and then “in … Continue reading
Posted in Recreational Mathematics
Tagged math videos, Michael Stevens, Youtube, Zipf's Law
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