• Follow @blue on mathstodon.xyz, the mathy Mastodon instance.

• See my (Tee)Spring shop, "Inspired by Math", for t-shirts featuring some of my mathy
  designs that have become somewhat popular on Math.SE.

• My Etsy shop, also "Inspired by Math", has posters. (Want a particular design? Tell me!)

• Seeking mathy employment outside of the traditional classroom.
  (Consultant to a STEM interest group, or even a museum? Contributor/ghost-writer/
  copy-editor/proof(!)-reader/TeX-ifier/diagrammist for articles or books? Coder/
  UX-designer of educational iOS apps or games? Geometer-for-hire?)
  Austin-area and/or remote.

• Contact me via the "Email the Trigonographer" link at trigonography.com.

I'm the ...

• Trigonographer at trigonography.com, spotlighting diagrammatic proofs for trig relations.

• Hedronometer at hedronometry.com, studying the dimensionally-enhanced trig of tetrahedra.

FYI: I use GeoGebra ---specifically, the desktop app--- for my images.