University of Colorado, Boulder

- Illustrated Theory of Numbers by Marty Weissman
- The topology of numbers by Allen Hatcher
- The last digits of primes
- Primes in a sunflower spiral
- Fibonacci numbers in a sunflower spiral
- The graphic nature of Gaussian periods
- Sparse Matrices
- Roots of Polynomials
- Polynomiography
- Multiplication Table to Scale
- Eigencurves
- Adult Colouring Books
- Images des Mathematiques
- Imaginary (like an online museum)
- Visual Complexity
- Maxwell's Demon
- Visual Insight (AMS Blog)
- Parable of the Polygons (when shapes discriminate)
- The Petrie Multipler (simulating sexism)
- Imaginary - a virtual math museum.
- XKCD - things that make math nerds laugh.
- Photo Gallery of the architecturally amazing host hotels for a Joint Mathematics Meetings, in Atlanta Georgia.
- A Mathematical Poetry Anthology collected from fourteen authors.
- The Importance of Mathematics - by Timothy Gowers.
- A Survey on Craptological Pairing Algorithms - I'm immortalised in a historic survey article in the Journal of Craptology.
- Ken Stange 1946-2016 (a little about my father).
- My photography weblog (approximately a picture-a-day on some days)
- www.katherinestange.com (old family nonsense etc)
- Bike Racing 101 - an overview of collegiate racing in the ECCC I gave to new members of Brown's racing team
- My suggested cycling routes in Rhode Island - includes the famed Jones Boston-Providence Route
- Beginner Cycling Safety for Group Touring - a minicourse I gave aimed at participants in Bike and Build