cropped-chalkdust-trans1.png Published 21 March 2015 at 1050 × 250 in cropped-chalkdust-trans1.png ← Previous Next → http://chalkdustmagazine.com/wp-content/uploads/2015/03/cropped-chalkdust-trans1.png Jigsaw Jigsaw is a talented chess player and fervent climber. All articles by Jigsaw More from ChalkdustNEW! Pop-math book clubDo you have lots of unread pop math books on your shelves? Join our new monthly online book club!Things to makePlatonic shapes from tube maps, flexagons, and more mathematical craftWhat’s hot and what’s notOptimal Pac-ManGhostbusting with graph theoryReinventing 2DWhat a difference a matrix makesYour social networksHow similar are you to your friends?