User contributions
- 12:52, 22 July 2014 (diff | hist) . . (+95) . . 1356: Orbital Mechanics (→Trivia)
- 00:06, 14 July 2014 (diff | hist) . . (-1) . . 710: Collatz Conjecture (→Transcript)
- 14:36, 13 May 2014 (diff | hist) . . (+201) . . 1133: Up Goer Five (→Explanation)