math is about ideas — formulas are just a way to express them. Once the central concept is clear, the equations snap into place. Here’s a strategy that has helped me:

• Step 1: Find the central theme of a math concept. This can be difficult, but try starting with its history. Where was the idea first used? What was the discoverer doing? This use may

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How a book written in 1910 could teach you calculus better than several books of today [Calculus Made Easy, by Silvanus P. Thompson, 1910: https://t.co/HJDxFqZNJf]