Mathematics is the language with which God wrote the universe.
Galileo Galilei
The study of humanities and hard sciences is quite different, first of all due to the peculiarities of feeding and memorizing the information. Thus, if the humanities can be taught independently, because here the most important thing is memorizing, the regular repetition and assimilation of information, than many of the hard sciences are the most difficult to be understood by you, because the formulas, equations, etc. require the explanations of qualified specialist.