Zipp researches aerodynamics. Pippsqueaks get a completely wrong idea about it.
Preread by AtomicClop and Cinder Vel
Art by Grapefruit-Face
Scouted here.
Reading by StraightToThePointStudio:
Part 1
Part 2

Sunset Shimmer, after gathering up her courage, decides to try and hit on the human world's Twilight. Little did she know that this simple action would spur the two of them into a fiery debate over a timeless question, one that humans and ponies alike have pondered for ages:

Which is better, pi or tau?

Written for Tau Day 2016.

EDIT: This… got featured? I… wow. Thank you all.

Once upon a time on a rock farm, two sisters bond over a piece of geometry.
Written for tau day (τ = 2π = 6.28) following a suggestion from Walabio

Rainbow Dash gets Twilight Sparkle to teach her calculus.

They are so screwed.

Can the mane six discover calculus fast enough to win a flying competition, counter a deadly parasite, and destroy a tornado?

Welcome to the only MLP fanfiction which doubles as a calculus tutorial.

Once this fic is complete, it will serve as a complete walkthrough for calculus. I want to teach the intuitive side of math: tell you why things work, and make you feel like you could have discovered them yourself.

Petition your teacher to make this your school's standard textbook.

Cadance is much more insecure about her mathematics skills than most imagine; but why? And why is everyone so dismissive, like, seriously? Leave Cadance alone!

Soooo... yeah.... I'm a terrible not the best terrible writer, so pointing out errors/plot holes would be nice!

Twilight tutors Rarity on polar coordinate systems and parametric equations.

Pre-requisites: first-year college calculus or equivalent (basic knowledge of functions and derivatives).