During high school, at the end of the year everyone in my Calculus class had to make a math presentation (to go along with a paper). During lunch one day we sto

During high school, at the end of the year everyone in my Calculus class had to make a math presentation (to go along with a paper). During lunch one day we stood with our posters to explain our project the the students that choice/were encouraged to attend. I explained my topic (re-ordering conditionally convergent series) to a group of students. They seemed to understand what I was saying, showed awe at some of the key insights/tricks, and even interupted me to excitadly finish the arguement. Then, when I was done, they pointed to the equations and asked me to explain them. My response was that those equations are exactly what I had just said, and I repeated the arguement while showing them where it is in the equations.