Safety By sheer dumb luck, an intersection where cyclists and cars can't see each other until seconds before they collide Cory Doctorow

Games Non-Euclidean Doom, where the value of pi is not 3.14159 Rob Beschizza

California teacher suspended after doing bizarre and offensive "Native American dance" in fake headdress to teach math concepts David Pescovitz

Boing Boing Gadgets Get over 90 hours of top instruction on Calculus, Number Theory, and more with this Mathematics training package Boing Boing's Shop

Boing Boing Gadgets Math doesn't have to hurt your brain – from engineering to the stock market, this training makes math fun Boing Boing's Shop

Spoken Word with Electronics Hear Betty Crocker's "Cooking for the Blind" series from the 1950's, and prepare a Thanksgiving Dinner with canned food. Ethan Persoff

math Lockdown math: trigonometry fundamentals Mark Frauenfelder

recreational math This trig problem kept me up too late last night Mark Frauenfelder

Science The physics of fidget spinners David Pescovitz

geometry How Eratosthenes calculated the circumference of the Earth in 200 BC Mark Frauenfelder

books A revelatory book of photographs taken by visually impaired people Christine Ro

happy mutants Dice so nerdy, they make other dice seem not nerdy Cory Doctorow

physics Elegance, illustrated: heliocentrism vs geocentrism Cory Doctorow

History New Zealand's lost colossus: all-mechanical racetrack oddsmaking computer Cory Doctorow

copyright Hakim, the Masked Gamer of Minneapolis Rob Beschizza

A nerd's 12 best and worst films from 2014 Ethan Gilsdorf