Mathematics, software, public policy—and the occasional strange project.
Notes from the working archive
A thermometer tells us which object is hotter, but explaining what temperature actually measures takes us through molecular motion, thermal equilibrium, entropy, and the laws of thermodynamics.
Read the essayMore recent writing
The four levels of measurement are useful, but their familiar classroom explanations obscure the difference between what numbers represent and what we can meaningfully do with them.
ReadA colonial Quaker's livestock earmark survived in the records of West Jersey. It turns out to be a small curiosity with an unexpected connection to heraldry.
ReadIndependent sites & ongoing work
Public history
The War of 1812 told as one connected story, with maps, evidence, timelines, and interactive historical systems.
Begin the story
Virtual exhibition
The Fatal Image
A virtual exhibition following Judith and Holofernes through art, text, time, and place.
Enter the exhibitionBooks with a life beyond the page
Book companion Two editions
Co-editor with John F. Beyers
2nd edition 2025
Explore both editions, their chapters and contributors, and resources for teaching mathematics online.
Book companion
Author · 1st edition
The living companion to Computational Methods for Numerical Analysis with R, with methods, code, laboratories, and teaching material.
Explore the companion
Book companion
Co-editor with Natalie M. Scala · 2nd edition
The companion site for Handbook of Military & Defense Operations Research, bringing the book, its authors, and supporting material together.
Explore the companionPublic history
A public-history project tracing a Canterbury manor, its people, its documents, and the limits of a modern claim.
Research & advocacy
Polar education, research support, and evidence-led advocacy focused on Antarctica and its global consequences.
People, symbols & the documentary record
Documented lineages, people, places, and the evidence connecting them.
The grant, insignia, emblazonments, tartan, and documentary record.
Awards, appointments, decorations, and other recognition.
Interviews, quotations, profiles, and appearances collected over the years.
