Hello I have noticed that there are hundreds of ways of teaching one theorem/concept in maths, often very complicated with pure math terminology the likes of which I find an absolute nightmare! to very basic and just using similies. It always "blows my mind" that there are so many different ways the mathematics is taught and presented across the vast material for learning that I use. It does not help that I come from a school where we were taught to be robots and not mathematicians. We were never taught what a derivative actually is (how it is presented in the textbooks) but just taught how to do it. We were drilled into solving thousands of functions of trigonometry but never touched upon what their origins or meaning were.anyway.its just unbelievable how many ways of teaching one concept exist. Has anyone else noticed this? I wish there was one book which I could stick to, but there really won't ever be. I am pretty shallow in my knowledge and don't practice it enough, but I feel like I am learning. Re: the significance of my school experience, well I really feel lost sometimes as I know I truly don't understand what I am doing. This troubles me, as I don't trust anything which I don't completely understand. This is what motivates me to learn math inside out..I know how to derivate functions and trigonometric identikits but the real reasons and why is missing? We were never taught that..Guess it really is upto the student.