Mathematics was for me a big challenge. It took for me a long detour to get a grip on Math and Physics. I had to go the rout of the approach in the Gemara Tractate Avoda Zara page 19 which says that the main thing in learning is to say the words in order from the start of the book until the end and then review. I found that this helped me to get started with math and physics. And from my own experience I try to recommend this approach to others who like me may not be particularly talented in these areas and yet still realize their importance. But Isaac Rosten told me that an essential part of this approach is the review part. After you finish the book or chapter, then you need to review four times. This approach does not work without the review part.