Here is a link to the playlist of video explanations to all of the math questions in the 2020 December ACT (Form D03) Test.

Online Resource for ACT Math
Here is a link to the playlist of video explanations to all of the math questions in the 2020 December ACT (Form D03) Test.
Here is a link to the playlist of video explanations to all of the math questions in the 2020 July ACT (Form C01) Test.
Here is a link to the playlist of video explanations to all of the math questions in the 2020 June ACT (Form C02) Test.
Here is a single image that summarizes why I recommend everyone to prepare for the ACT by practicing with official ACT tests.
Here is a link to the playlist of video explanations to all of the math questions in the 2019 June ACT (Form B02) Test.