It all began yesterday in my math lesson.My teacher introduced us into a new subject: The Heron method.
This is a method for iteratively computing the square root of a number which was made up by Hero of Alexandria.
But here's the cool part:
When my teacher said "method" I had the thought that I could make a programm on my TI-82 Stats (my calculator).
So I used the next break to make a little programm that does exactly the same what my mates has to do in several steps, in just one step.
Here is a picture so I can explain the programm:

First it asks for the root that it should calculate then for a value to begin with and finally for the amount of arithmetic operations.
Then it goes trough the algorithm and displays the interim results (this is important for later ...) .
So back in story.It wasn't surprising that we got exercises with this method as homework but through my programm I just needed 5 minutes instead of 20 minutes (like my class mates).