College Algebra · Module 14 · Sequences, series and counting

Sequences Walkthrough

Watch lists of numbers climb like staircases and grow like snowballs, add them with Gauss's pairing trick and the cancel trick, see an infinite sum fill a square, then count outfits, orderings and committees and build Pascal's triangle. Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · College Algebra Study Tools · CC BY-NC-SA 4.0
Use the left and right arrow keys to move between steps. Practice next in the Sequences Lab. Sequences use n = 1, 2, 3, ... and are drawn as separate dots or bars, never as solid curves. The drug example is a simplified teaching model, not dosing guidance. Animations loop so you can watch them as many times as you like.