por Ann D•
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.
por Nakul S•
Helped me sooooo much!!! Great for high school physics.
por Siddharth K•
Great review for the AP Physics 1 exam!
por li w•
por Maestro S•
Too much question and it takes me too much time on it
por Xiaolu W•
There are few mistakes in the video.
por Aidan H•
Some content on quizzes wasn't covered in the videos