Two young mathematicians discuss what calculus is all about.

Check out this dialogue between two calculus students (based on a true story):
Devyn
Riley! How do you know when you are doing a calculus problem?
Riley
Hmmm. I guess if you take a derivative you are doing a calculus problem.
Devyn
What else?
Let’s hear your answer to Devyn’s question above.
Answer will vary.