The "Algebra Level" is the unofficial 28th floor of AEwVS, it can be unlocked after beating the The Hellish Barge level.
Dr.Kristopher Remington greets you in the first room, where he tells you to go to the first class and learn the equations. In the notebook all you need to do is solve pretty simple equations for example "find the X". After you answer the last example wrong. Kristopher will get really mad at you. And if you look at him, just like Marzia, he will speed up. Once you collect the final notebook, Kristopher will go crazy fast and impossible to outrun, all you need to do is get to the elevator, after that you will proceed to the next level. More coming soon.