BetterMath articleshttps://www.bettermath.org/articles/ Articles on IB Mathematics AA HL by Hasan Khanen Adding infinitely many numbershttps://www.bettermath.org/articles/adding-infinitely-many-numbers/https://www.bettermath.org/articles/adding-infinitely-many-numbers/ Tue, 29 Sep 2026 00:00:00 +0000How can a sum that never ends have a finite answer? The formula for an infinite geometric series, and why it is true. How to study with BetterMathhttps://www.bettermath.org/articles/how-to-study-with-bettermath/https://www.bettermath.org/articles/how-to-study-with-bettermath/ Mon, 28 Sep 2026 00:00:00 +0000The notes are long for a reason. A short guide to reading a chapter, using Your Turn, and turning mistakes into progress.