There are few mistakes in the video.

Helped me sooooo much!!! Great for high school physics.

Shame on you University of Houston System

I did the first three lessons, which are less than average, then went on to quiz 1, after completion, a window appeared to ask me for money to get my results! This information should have been provided when I enrolled! I find that very mis leading.

amazing

Some content on quizzes wasn't covered in the videos

nicenice

Great review for the AP Physics 1 exam!

Too much question and it takes me too much time on it