2 February 2019

• 22:1622:16, 2 February 2019 diff hist +11 2014 AMC 10A Problems/Problem 22 →Solution 3 Quick reflection, no trig
• 22:1622:16, 2 February 2019 diff hist 0 2014 AMC 10A Problems/Problem 22 →Solution 3 (Measuring)
• 22:1622:16, 2 February 2019 diff hist +764 2014 AMC 10A Problems/Problem 22 →Solution 3, Construction

4 February 2017

• 15:2315:23, 4 February 2017 diff hist 0 m 2016 AMC 10A Problems/Problem 20 →Solution
• 15:2315:23, 4 February 2017 diff hist +23 m 2016 AMC 10A Problems/Problem 20 →Solution
• 15:2215:22, 4 February 2017 diff hist +35 m 2016 AMC 10A Problems/Problem 20 →Solution
• 15:1915:19, 4 February 2017 diff hist +36 m 2016 AMC 10A Problems/Problem 20 →Solution

27 December 2016

• 09:4709:47, 27 December 2016 diff hist −627 2016 AMC 8 Problems/Problem 25 →Part Solution 5: Answer Choices

23 December 2016

• 13:0413:04, 23 December 2016 diff hist +26 m 2014 AMC 10A Problems/Problem 11 →Solution 2 (Using The Answers)
• 13:0313:03, 23 December 2016 diff hist +31 m 2014 AMC 10A Problems/Problem 11 →Solution 2 (Using The Answers)
• 13:0213:02, 23 December 2016 diff hist −2 m 2014 AMC 10A Problems/Problem 11 →Solution 2 (Using The Answers)
• 13:0113:01, 23 December 2016 diff hist +304 m 2014 AMC 10A Problems/Problem 11 →Solution 1

21 December 2016

• 10:0410:04, 21 December 2016 diff hist 0 m 2004 AMC 12A Problems/Problem 14 →Solution 2

20 November 2016

• 14:5214:52, 20 November 2016 diff hist +10 m 2013 AMC 12B Problems/Problem 15 →Solution

12 November 2016

• 14:3414:34, 12 November 2016 diff hist +357 m 2005 AMC 8 Problems/Problem 25 →Solution
• 14:3414:34, 12 November 2016 diff hist +345 m 2005 AMC 8 Problems/Problem 25 →Solution
• 14:3314:33, 12 November 2016 diff hist +333 m 2005 AMC 8 Problems/Problem 25 →Solution

20 October 2016

• 18:3718:37, 20 October 2016 diff hist 0 m 2010 AMC 10B Problems/Problem 12 →Solution

18 October 2016

• 21:3221:32, 18 October 2016 diff hist −46 2010 AMC 10A Problems/Problem 15 →Solution 1
• 21:3021:30, 18 October 2016 diff hist +45 m 2010 AMC 10A Problems/Problem 15 →Solution 1

11 October 2016

• 19:2619:26, 11 October 2016 diff hist +267 2012 AMC 10B Problems/Problem 15 →Solution
• 19:2519:25, 11 October 2016 diff hist +5 2012 AMC 10B Problems/Problem 15 →Solution
• 19:2519:25, 11 October 2016 diff hist +263 2012 AMC 10B Problems/Problem 15 →Solution
• 18:2718:27, 11 October 2016 diff hist −1 m 2012 AMC 10B Problems/Problem 9 →Problem 9

16 February 2016

• 20:1120:11, 16 February 2016 diff hist +1 m 2015 AMC 10B Problems/Problem 17 →Problem
• 20:0920:09, 16 February 2016 diff hist −2 m 2015 AMC 10A Problems/Problem 7 →Problem

26 January 2016

• 18:4018:40, 26 January 2016 diff hist +1 m 2008 AMC 10B Problems/Problem 17 →Solution

29 December 2015

• 10:3710:37, 29 December 2015 diff hist +4 m 2015 AMC 8 Problems/Problem 10 →Solution 1
• 10:3610:36, 29 December 2015 diff hist +15 m 2015 AMC 8 Problems/Problem 10 →Solution 1

10 November 2015

• 21:5421:54, 10 November 2015 diff hist +55 m 2009 AMC 8 Problems/Problem 21 →Problem
• 21:2221:22, 10 November 2015 diff hist +2 m 2009 AMC 8 Problems →Problem 14

31 October 2015

• 14:1214:12, 31 October 2015 diff hist +20 1994 AJHSME Problems/Problem 14 →Solution
• 14:1114:11, 31 October 2015 diff hist +55 1994 AJHSME Problems/Problem 22 →Solution
• 14:0114:01, 31 October 2015 diff hist +63 m 1994 AJHSME Problems/Problem 14 →Solution
• 12:1812:18, 31 October 2015 diff hist −7 m 1993 AJHSME Problems/Problem 16 →Problem

26 October 2015

• 19:0719:07, 26 October 2015 diff hist +15 m 1987 AJHSME Problems/Problem 3 →Solution