I will make your faith known with my mouth.אודיע אמונתך בפי האמונה תולה בפיו של אדם ועל-ידי  דבורי פיו יכול לבוא לאמונה Rav Nahman in the LeM II: 44 brings this verse and then says that "Faith depends on one's words and by means of one's words he can come to faith." He put a lot of emphasis on what one says. And also על ידי אמצעות הדיבור יכולים לבוא לתבונות התורה לעומקה By means of the word one can come to understandings of theTorah-to its very depth.

So not just faith, but understanding also come from one's words. I think this can be applied to the natural sciences, as well. 

I am being short. But my basic point is the talented people in the natural sciences do not need to be told  how to do their learning. But what about the rest of us? Should we be ignorant of  Physics, Math, Chemistry Biology? But the "Division of labor" costs us this. We think we do not need it because others can do it. And even if we want, the idea of just saying the words and going on sounds ridiculous. So people end up not knowing anything about the natural sciences at all. 

So I suggest that all the above is a mistake. We see in some  Rishonim that knowledge of the natural sciences is a part of the commandment "to learn Torah," [but not all Rishonim]. Plus I hold that this way of learning by saying the words and going on does work. 

You see in the Gra there is an obligation to know all the Seven Wisdoms, and the lack of knowledge in any one of them results in alack of understanding on Torah--a hundred times more.

[However, I combine it with review by going up to a certain point and then going back page by page to the beginning. And then at that point go back to the place I stopped and going a few more pages forward. And then review again back to the beginning.

[Also I should add that I heard in Shar Yashuv the importance of taking some chapter and doing review on it ten times. This might have originated with Rav Hutner. Why do I say this? Because in the Mir I had heard the same thing about the local store owner that had finished chapter 3 in Shabat ten  times.

I might add that while at Polytechnic Institute of NYU, I used to say the words of my lessons forwards and backwards and used that method for a few years. That is in the Physics or Mathematics text, I would say the whole forward and backwards and that included the exercises.