I just uploaded video explanations to all of the math questions in the 2015 June ACT Form 73C Test.

ACT just released the official practice test for the 2015-16 year. The practice test is based on the June 2014 Official ACT test, Form 72C. However, not all questions are identical. For example, in the math section of the practice test, only 36 of the questions are present in the June 2014 ACT test. Here is the link:

ACT Practice Test: 2015-16 Form 72C

This also happens to be the first time that the practice test released by ACT is from a recent administration.

Please note that ACT uses this generic link to post practice tests and the link in the future will point to an updated test.

I just published the playlist of video explanations to all of the math questions in the Decemeber 2014 ACT 72G test.

 
I just posted the video explanations to all of the math questions in the June 2014 ACT 72C test. The question number 49 and 55 were the most challenging ones in this test.

 
I just posted the video explanations to all of the math questions in the December 2013 ACT 71E test. The question number 57 and 59 were the most challenging ones in this test.