So, I want to teach calculus to my math club. I know that differentiation and integration is easy. But how do I teach the CONCEPT of DERIVATIVES and INTEGRATION to people who only learned algebra 2? Algebra 2 people because that's the bare minimum of mathematics you need to learn calculus, with the exception of trigonometry. Also, how do I teach them the concept of dy, dx, dy/dx, d/dx, d^n/dx^n? I don't want them to be confused. I have to treat them like little kids.