This Calculus worksheet is intended for students after they have learned the Chain Rule (3.1 AP Calculus AB) and Implicit Differentiation (3.2 AP Calculus AB). When first learning the chain rule d/dx(f(g(x))= f'(g(x))g'(x), and implicit differentiation, students often struggle with remembering to multiply the f'(g(x)) expression, by g'(x). So in this worksheet, I have included several examples of actual written work that is incorrect, where students are to identify the student error that was mad