Game on! New course explores the physics of sports

two people stand and balance on either side of a plank with a fulcrum under it. both their arms are out like they are trying not to fall.

By Francesca Smith, physics communications intern

Students who signed up for a course about the physics of sports probably did not expect to take a field trip to the Kohler Art Library at the beginning of the semester. But the unexpected is the norm with Jim Reardon, the instructor for Physics 106: Physics of Sports. While many science courses on campus consist largely of memorizing equations and staying ahead of the class curve, Reardon takes a multifaceted, participatory approach to teaching his students.

“You’re trying to put on a show that grabs their attention and effortlessly keeps it because you’re presenting a spectacle, like a movie,” Reardon says. “You don’t have to force yourself to pay attention to something that’s inherently interesting, it just sort of naturally goes there.”

“Abe Eddington at the trot” is the first sports movie ever made. Eadweard Muybridge pioneered a method of showing images using a zoopraxiscope. This animated GIF, compiled by Jim Reardon from Library of Congress images, helps to recreate the movie.

At the library, Reardon has students flip through a first-edition copy of Eadweard Muybridge’s Animal Locomotion from 1887, which shows phases of movement through photo sequences. Motion — so fundamental a concept to physics that Isaac Newton developed a set of laws around it — is commonly taught using a quantitative approach. Reardon uses Muybridge’s images to illustrate the concept of motion in a more intuitive way.

Reardon first developed Physics 106 with the help of fellow UW–Madison physics professor Cary Forest. The two were inspired by a similar course taught by one of Forest’s colleagues at UC Irvine, which was a favorite among students there. Physics of Sports was first taught at UW–Madison in Spring 2023, and initially resulted in 36 student enrollments. Now, three years later, course registration numbers have skyrocketed to approximately 300 undergraduates.

While the course’s theme attracts sports fans, Reardon’s unique methods of teaching also resonate with students, especially those intimidated by the idea of taking a college-level physics course. He follows a hands-on approach to teaching, where students are encouraged to, for example, run and jump in front of the classroom to demonstrate momentum. Field trips such as the aforementioned visit to the Kohler Art Library are also common in the course. Reardon used to work with The Wonders of Physics — the physics department’s educational outreach program — and noticed how audiences responded better to participation compared to lectures alone.

a man kneels down next to a tall mesh cylinder with a vertical column of fire inside it
A fire tornado shows the link between oxygen consumption and energy burned as exercise intensity increases.

The course model also emphasizes lots of extra credit opportunities, which offer students a chance to improve their grades through additional work. If a student performs poorly on an exam, for instance, they then have the option to redeem their grade on the exam by demonstrating mastery of concepts they missed. In that sense, Reardon also uses Physics 106 to broaden the traditional standards of technical education. He points out that it’s as if students, when they were young, were divided into black-and-white categories of “good” and “bad” at math, which affects the confidence and success of students later on.

“And then we, at the college level, have to deal with that,” Reardon says. “Many of them I think would be quite successful, if they only didn’t have these mental blocks left from earlier.”

By utilizing a topic — sports such as baseball, basketball, football and more — that students find engaging, he can use this initial interest to help teach them about fundamental physics concepts such as impulse and energy. In that sense, Reardon seems to be his own kind of coach for the students in Physics 106: Physics of Sports. He considers an individual student’s success a team win, through a joint effort on their end and his.

“If I’m engaged to teach these students physics, then they’re going to get taught physics,” Reardon says. “So it takes a lot of extra work for me, but I do feel that there are a lot of gains to be made, too.”


Top photo: Everyone is an expert in torque even if they don’t know it yet, says Jim Reardon. Reardon (right, with teaching specialist Mitch McNanna PhD’23), uses familiar concepts — like a seesaw that most students played on at some point in their childhood — to illustrate physics topics such as torque.

Jim Reardon wins WISCIENCE Lillian Tong Teaching Award

Each year, the University of Wisconsin–Madison recognizes outstanding academic staff members who have excelled in leadership, public service, research and teaching. These exceptional individuals bring the university’s mission to life and ensure that the Wisconsin Idea extends far beyond the campus and the state. Ten employees won awards this year, including Dr. Jim Reardon, Director of Undergraduate Program with the department of physics.

Jim Reardon’s love of running and his excellence as a physics instructor recently came together in the classroom in a big way with Physics 106: The Physics of Sports, a course he developed and now teaches. The new course applies physical principles to competitive sports, helping students better understand athletic performance. It’s proven exceptionally popular, attracting almost 140 students in only its third semester.

action shot of Jim Reardon teaching
Jim Reardon, director of undergraduate program in the Department of Physics at the University of Wisconsin–Madison, is pictured while teaching during a Physics 106 class held in Chamberlin Hall on March 20, 2024. Kaul is one of ten recipients of a 2024 Academic Staff Excellence Award (ASEA). (Photo by Bryce Richter / UW–Madison)

Reardon’s expertise at course development, his mastery at instruction and his exemplary support of teaching assistants have made him indispensable to the Physics Department. As director of the undergraduate program, he implemented standardized assessments in the department’s large introductory courses. This provided a baseline for successful course modifications and allowed nationwide peer assessment comparisons. As the administrator of the teaching assistant program, Reardon expertly matches the strengths of TAs with the needs of the department.

Reardon is no less valued in the classroom. Students routinely give him the highest of marks. Writes one, “I have never seen a professor or teacher work so effectively and patiently to ensure his students understood the information.”

“Jim is unique in his broad and ready grasp of the subject matter combined with a passion for teaching and making sure that ALL students have access to that subject matter.”

— Sharon Kahn, graduate program manager, Department of Physics