I've read your essay.. I think that's a nice essay.. however, I would give you some suggestions i your essay...
As a student,*I felt understanding ideas and concepts were more important than learning facts, **and I never paid much attention to facts. As a result,***I never mastered things that I learnt. Therefore, I think though ideas and concepts are the ultimate goal for learning, learning the facts is very important to master what we learnt.
*In this part, I think you have to pay attention in subject verb agreement..
**also, don't forget put comma if the form S+V,and S+V
*** I think you ought to make sure tense that you use, sometimes we find difficult to understand without time signal.
In body paragraph, I suggest you to write main topic first, and then give the reason and followed by sample to make it specific.
"Topic sentence + Reason/support idea + sample + conclusion" this pattern can lead us to make paragraph with great flow.
Leave alone history, any scientific invention or discoveries can be proved only by facts. Sir Issac Newton accidentally discovered the concept of gravity. However, to make the world understand and accept this concept he had to present his facts.
this is a good part due to the fact that you write scientific fact to support your idea, but It would be great if you put in your body paragraph with following the pattern that I mentioned before.