par Ann D
•30 janv. 2017
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.
par Siddharth K
•1 mai 2016
Great review for the AP Physics 1 exam!
par Nakul S
•15 juil. 2017
Helped me sooooo much!!! Great for high school physics.
par li w
•15 mai 2016
nicenice
par Maestro S
•18 déc. 2016
amazing
par HowardZhou
•15 mars 2016
Too much question and it takes me too much time on it
par Lane W
•14 août 2017
There are few mistakes in the video.
par Aidan H
•31 oct. 2016
Some content on quizzes wasn't covered in the videos