Calculus Made Easy (1914) [pdf]
This is a good book, but the first time I read it, I was puzzled. There&#x27;s all this stuff about &quot;infinitely small pieces&quot; like every other calculus resource. It wasn&#x27;t until I had practice using the derivative rules and the chain rule that calculus clicked for me.<p>I think calculus should be taught like &quot;here&#x27;s a set of tools to help you rewrite your equations to make them output the slope of their graph&quot;.<p>Then, afterwards, you can get into what makes it all tick. Sort of like teaching a student to write &quot;hello world&quot; before diving into the low level mechanics of a compiler.