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Interested in broadening your mathematical knowledge and sharpening your analytical thinking? Join the Colorado Math Circle for math talks and problem-solving sessions at the University of Colorado Boulder.

Calendar

View the 2024–25 meeting schedule.

Meetings will take place at CU Boulder except for afterschool meetings which will be held remotely.

Join

You may attend any meeting without pre-registering.

Submit this form to join our mailing list.

ARML Team

For high schoolers

Participate in the
ARML Competition

University of Nevada, Reno

Team tryouts held in March


2024 Colorado ARML Team

2024 Colorado ARML Team



Galois Group

For middle schoolers

Jan/Feb problem-solving sessions

Prepare for MATHCOUNTS, AMC 8

Participate in AMC 8

Euler Group

For high schoolers

Math talks and problem-solving sessions

Prepare for AMC 10/12, AIME, ARML

Participate in AMC 10/12 and team contests

Afterschool Program

For middle and high schoolers

Weekly online problem-solving sessions

See below for more information



Afterschool Program

The Colorado Math Circle will be offering weekly afterschool problem-solving sessions on Zoom every Thursday, 4:15-5:30 pm. These sessions are for advanced middle and high school students who wish to improve their mathematical problem-solving skills.

We expect to have two groups:

  • AMC: focusing on AMC 10/12 level problems
  • MathCounts: focusing on state level MathCounts problems

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Colorado ARML

In May 2025, the Colorado ARML Team will compete against regional teams from around the country and abroad at the ARML Competition. In 2024, thirty-two Colorado students from thirteen different schools were chosen to represent the state in the team competition.

Over the years the Colorado team has won national honors in the B division six times, including first place in 2023, 2021, and 2006. Colorado students have ranked among the top ten individuals in six different years.

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News

June 2024
Thirty-two Colorado students from 13 different schools competed in the national ARML Competition at the University of Nevada Reno. The competition attracted 113 fifteen-member teams and 1621 students from the U.S. and abroad, who competed simultaneously at four sites.

Congratulations to Jackson Dryg, who placed 19th in the nation! Congratulations also to Colorado Team 1, which tied for 22nd nationally out of 52 teams in Division A.
April 2024
The Colorado Math Circle finished in 7th place in the 2023-2024 ARML Power Contest. Congratulations to everyone who participated this year!

In the 2024 Purple Comet! Math Meet, the Colorado Archimedes team tied for 3rd place out of 340 teams in the high school mixed teams division. Congratulations to team members Shruti Arun, Srinivas Arun, Jackson Dryg, Jacob Greene, Davin Yin, and Kelly Young!

Congratulations to the following math circle members who qualified for the USA Mathematical Olympiad (USAMO) and USA Junior Mathematical Olympiad (USAJMO)!
2024 USAMO Srinivas Arun Cherry Creek HS
  Ethan Lou Cherry Creek HS
2024 USAJMO Shruti Arun Cherry Creek HS
  Joshua Liu Denver Online HS
Special congratulations to Shruti Arun who has been invited to attend the Math Olympiad Summer Program (MOSP)! The program will train and select the members of the USA Math Olympiad Team. Congratulations also to Srinivas Arun who received a USAMO Bronze Award and to Joshua Liu who received a USAJMO Honorable Mention!

The 2024 ARML Local Competition attracted 99 six-member teams from around the country and abroad. The Colorado Archimedes team finished in 11th place! Congratulations to team members Shruti Arun, Srinivas Arun, Jackson Dryg, Jacob Greene, Davin Yin, and Kelly Young! Special congratulations to Jackson Dryg and Abhinav Krishna who scored 9/10 score in the Individual Round!
January 2024
Congratulations to Shruti Arun of Cherry Creek HS who won a Bronze Medal in the 2023 Math Prize for Girls Olympiad. The contest was held in December for the top scorers in the Math Prize for Girls competition.
October 2023
Congratulations to Shruti Arun of Cherry Creek HS who won 4th place in the Math Prize for Girls contest! The top 41 students will advance to the Olympiad Round. We wish Shruti the best of luck!

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FAQ

What are Colorado Math Circle meetings like?
They vary. Often a speaker will give a math talk on a specific topic. Past Euler Group topics have included generating functions, cyclotomic polynomials, dynamical systems, synchronization, graph theory, computability theory, knot theory, and olympiad inequalities. Past Galois Group topics have included parity, golden ratio, Pascal's triangle, Catalan numbers, recursion, and knot theory.

At most meetings we have time for group problem solving. The problems may require a numerical answer or may require a proof. (The word "proof" sounds intimidating but it just means you need to show that something is true.)

During problem solving sessions, students are free to collaborate with other students. We encourage students to present solutions at the board. This is an excellent way to practice explaining mathematics to others.

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Directions

Math circle meetings will take place on the CU-Boulder campus except for the weekly afterschool meetings which will be held remotely on Zoom. Campus locations include

About the Math Circle

The Colorado Math Circle was created in 2005 to provide extracurricular math opportunities for young math enthusiasts from around the state.

Directors

Silva Chang is a Teaching Professor in the Department of Applied Mathematics at CU Boulder. She founded the Colorado Math Circle and has directed it since 2005.

Thomas Davids is Co-Director of the Colorado Math Circle and Coach of the Colorado ARML Team. He grew up in Boulder, and is a Summit MS and Fairview HS alum. He currently works at Google.

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Members

The Members section contains meeting handouts and other resources. for the password.