What is a math circle?
A Math Circle is a welcoming space where students and skilled teachers gather to explore challenging and creative math together. In every session, you can expect:
Experience math through puzzles, games, and real-world challenges that spark curiosity and make learning fun.
Collaborate with peers who share your interests and connect with mentors who encourage your growth.
Gain skills, confidence, and a passion for math that can open doors to advanced study, STEM careers, and lifelong learning.
Two types of math circles
We offer Math Circles in two formats—each designed to make high-quality math enrichment accessible to Chicago students:
Browse HUB and After School Program locations.
our team








Math Circles of Chicago Online Speaker Series
Join us throughout the fall for a series of online talks from math educators at a variety of summer math programs for high school students. Come if you are interested in learning more about the landscape of summer math programs or just to learn about an interesting topic in mathematics.
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Melissa Johnson named MS Math Teacher of the Year!
Melissa Johnson will be given the Excellence in Middle School Math Teaching Award for the state of Illinois at the upcoming ICTM conference this September. Ms. Johnson teaches at Libby Elementary School where she also leads math circles during the school year and over the summer. She runs festivals and starting this fall she'll lead our Haynes-5/6 at our new Hub at Chicago State University!
FAQS
Our Hubs (open to all 3rd to 12th graders) run in the fall and winter. If you have good attendance in the fall you can re-enroll in the winter and vice-versa. We also have summer camps; our Hubs do not, however, run in the Spring (in Chicago, that's the time of year to get outside before it gets too hot). Find a Hub on the map to see the specific days that site holds sessions!
Our After School Program math circles run during the seasons determined by the teacher leading the individual program; some run fall, winter, and spring, and a few even run their own MC2 summer camps.
If you are new to MC2, when you register you will be informed that you have entered the lottery. On the priority deadline day, a lottery is run. Students in public schools in Chicago fill spots first; otherwise, each student in the lottery has an equal chance for admission. Admissions emails are sent out that day.
If you attended math circles the previous semester, attending at least three sessions, you can re-enroll at the same site. You must do so before the priority deadline to re-enroll. Note that there is no re-enrollment for summer--all students applying for summer enter a lottery; students can enroll after the lottery runs if space is available.
Students who miss the first day of math circles and who do not notify their site coordinator via email prior to that day will be dropped if that program has a waitlist. Students who are admitted from the waitlist will be notified at least one week before the corresponding site’s second meeting.
No. Historically the high school programs–Kovalevsky-A2/PC and Euler–have not had waitlists. The programs that have had waitlists most frequently are Cheng-3/4 and Haynes-5/6 at our Saturday sites.
Our sessions are designed to challenge all students, especially advanced ones. Because math circles are a social experience and an educational experience, students are learning to be in a math community with their peers in age.
Cheng is for 3rd and 4th graders
Haynes is for 5th and 6th graders
Brahmagupta is for 7th and 8th graders
High school students can choose to register for Cantor if they have less previous experience with math circles, and Kovalevsky is encouraged for advanced math students in high school.
We do rarely make exceptions, but only for students who have already taken at least one year of the program at their appropriate grade level, i.e. a 7th grader who takes a full year of Brahmagupta will have a stronger case petitioning to take Cantor as an 8th grader.
Yes! Our new 3rd/4th grade program launched in the fall of 2023! This program is called Cheng-3/4 and is offered at all of our Hubs.
We're sorry, but we do not admit 2nd graders into our programs.
Generally, yes. You do need to have good attendance (no more than 3 absences in a quarter), and you are only guaranteed a spot at the same location. Please note: Because we do not have nearly as many spaces available in our summer camps as we do in our academic year program, no one is guaranteed a spot in the summer. However, we generally give priority to students who have strong attendance during the school year priority in our summer lottery as much as we can.