Where Horses Inspire Discovery

EquiPhysics is a small nonprofit in Sonoita, Arizona, that studies how horses move and breathe with tools from math and engineering.

Free lessons and apps
Donate

We bring horse lovers to mathematics, and put mathematics to work for horses.

Save the date: Dominique Barbier at Rancho del Nido, December 18–20, 2026

Three days of French Classical Dressage with EquiPhysics demonstrations all weekend. Ride or audit. Details and registration.

Girl Scouts trace water flow in Nogales

Five Girl Scouts made models to test in our portable flow tank. When one student noticed a quiet patch of water beside a coral-like shape, we talked about how currents bring food to corals. See the models in the tank.

Our horses are the teachers: their real strides and heartbeats make math class something students care about. Our lessons and data are free for anyone to use.

Horses in an open paddock on a December morning, with the mountains behind them.
A grey horse looks over the paddock fence at first light.
A bay horse stands in the sun, side on, the way we photograph posture and build.

Can’t give right now?

You can still help a lot. Share our work, and follow us on Instagram, Facebook, LinkedIn, and GitHub. Follows and shares help us show grant funders that people value this work.