math How many triangles do you see? David Pescovitz

video View nature through a Magical Triangle Andrea James

makers Revisiting Make:'s weekly Math Monday column Gareth Branwyn

mistakes Raytracing with MySQL Rob Beschizza

cars Wedged Wonders: pointy concept cars of the seventies Rob Beschizza

laser cutter The Polygonia Design Suite, a web app for easily creating symmetrical, repeating patterns and designs Gareth Branwyn

Games Why video games are made of triangles.. smaller and smaller triangles David Pescovitz

law For the best of reasons, The Slants won the right to trademark racially offensive slurs — and now there's rather a lot of that Cory Doctorow

patterns A train station with walls designed using cellular automata "Rule 30" Clive Thompson

music Guitarist demonstrates beautiful tonal differences in "The Four Seasons" Guitars Andrea James

tokyo travel tips Tokyo travel tips, day 3 (part 1): Buddhist goddess and panic at the hot springs Mark Frauenfelder

tokyo travel tips Tokyo travel tips, day 2: Yoyogi park Mark Frauenfelder

books Triangle — a new book about some very sneaky shapes Marykate Smith Despres

happy mutants Roller Girl: Newberry-honored coming of age graphic novel about roller derby and difficult tween friendships Cory Doctorow

notebooks Notebook nirvana – three stunning journals to behold Sara Lorimer

video How a child math prodigy sees numbers as shapes Andrea James

podcasts The Texas Sharpshooter Fallacy David McRaney

Gadgets What's the best way to distribute numbers on the faces of a D120? Cory Doctorow

Gadgets HP's laptop is world's thinnest Rob Beschizza