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Upcoming Circles

Circle Name Age Day Eastern Time Start Date End Date
Chico on Geometry Island* 6-8 Sun 1 PM Apr 5 Jun 7
Troublez's Games of Chance 6-8 Tue 8 PM Apr 7 Jun 9
Laser Cuts 11-14 Tue 4 PM Apr 7 May 26
D & Dice* 11-14 Tue 6 PM Apr 7 May 26
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Chico on Geometry Island*
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Chico was a brave little chick, but he never imagined the adventure that was waiting for him. One day, separated from his friend Barry during a hunt for hidden treasure, Chico found himself alone in a land of tall cliffs and twisting paths. To find his way home, he will need to use everything he knows about angles, directions, and distances. But he can’t do it alone — will you jump into this world of geometric challenges and help Chico find the way out?

Note: There are no prerequisites for this circle.

*This circle may be co-led by a GMC Leader-in-Training, supported by an experienced GMC leader.

Age Group:
6-8 years old
Start Date:
April 5, 2026
End Date:
June 7, 2026
Days:
Sundays
Tuition:
Sliding scale: 0-
300 USD
# of Sessions:
10
Time:
10AM-11AM Los Angeles Time 1PM-2PM Boston Time
Dani Motta
Apply
Troublez's Games of Chance
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Troublez is a curious monkey who loves pizza more than anything. One day, he was eating one of the best pizzas ever, when his last slice was stolen! Following the trail of crumbs and delicious goopy cheese, he ran into a group of animals who were sitting in pairs, rolling weird dice that he had never seen before. He jumped into a game with a friendly capybara, so intrigued that he forgot about his pizza!

Will you help Troublez develop his probability skills, and find a way to fit in with these game-playing animals? In this circle we'll help him understand these dice, learn strategy, and make up some dice games of his own. And maybe find his missing pizza slice, too!

Note: There are no prerequisites for this circle.

Age Group:
6-8 years old
Start Date:
April 7, 2026
End Date:
June 9, 2026
Days:
Tuesdays
Tuition:
Sliding scale: 0-
300 USD
# of Sessions:
10
Time:
5PM-6PM Los Angeles Time 8PM-9PM Boston Time
Dani Motta
Apply
Laser Cuts
Apply

This fast-paced group will explore a multi-dimensional sectioning question. Using geometry, combinatorics, and algebra, we will uncover patterns, models, and formulae.

Note - Circle Prerequisites:
‍
(1) Comfort with combinations and permutations
(2) Has seen figurate numbers (triangular, tetrahedral, etc.)

Age Group:
11-14 years old
Start Date:
April 7, 2026
End Date:
May 26, 2026
Days:
Tuesdays
Tuition:
Sliding scale: 0-
240 USD
# of Sessions:
8
Time:
1PM-2PM Los Angeles Time 4PM-5PM Boston Time
Hilary Lerner
Apply
D & Dice*
Apply

Why do some sets of dice make better odds than others? How can we know which rolls are likely to get us what we want? In this circle, we will delve into the statistics of dice in roll playing games. No prior knowledge of table top roll playing games is needed, though we will be using them as a framework for our exploration.

Note - Circle Prerequisites:
‍
(1) Can multiply fractions
(2) Has not studied probability in depth

*This circle may be co-led by a GMC Leader-in-Training, supported by an experienced GMC leader.

Age Group:
11-14 years old
Start Date:
April 7, 2026
End Date:
May 26, 2026
Days:
Tuesdays
Tuition:
Sliding scale: 0-
240 USD
# of Sessions:
8
Time:
3PM-4PM Los Angeles Time 6PM-7PM Boston Time
Hilary Lerner
Apply
We have a strict policy of no refunds, no credits, and no transfers. Our philosophy values the intimacy of small group learning, which makes our availability limited. We encourage you to thoroughly review The Global Math Circle FAQ prior to registration to make an informed decision and explore alternative options, ensuring a fulfilling experience for your child.
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Recent Circles

[WAITLIST OPEN] Tumbling Dice
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Unravel the enigmas of dice: number cubes, yes, and more — tetrahedra, octahedra, dodecahedra, icosahedra too! What other shapes can you imagine? And how should the sides be marked? No matter how they're shaped or labeled, we will start by looking at how they fare against each other and how they can be combined. Join us for an enjoyable journey examining how dice work: probability, odds, combinatorics and more. You’ll never see dice games the same way again.

Note - Circle Prerequisites:
‍
(1) Familiar with fractions
(2) Does not have extensive knowledge of permutations and combinations

This circle is now open for waitlist. If we receive enough interest, we may be able to open a second section.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
8-10 years old
April 7, 2026
June 9, 2026
Tuesdays
300 USD
10
4PM-5PM Los Angeles Time 7PM-8PM Boston Time
Peter Petto
Enroll
[WAITLIST OPEN] Great Grids!*
Apply

This circle will focus on grids, and the many mysteries that spring from them. By filling these objects with numbers, lines, and more, we'll begin to unlock secrets of parity, symmetry, and careful proof-making. This can take us to places combinatorial, algebraic, or otherwise captivating — not to mention what might happen if we change the shape of our grid entirely!

Note: There are no prerequisites for this circle.

This circle is now open for waitlist. If we receive enough interest, we may be able to open a second section.

*This circle may be co-led by a GMC Leader-in-Training, supported by an experienced GMC leader.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
9-11 years old
April 6, 2026
June 8, 2026
Mondays
270 USD
9
2:30PM-3:30PM Los Angeles Time 5:30PM-6:30PM Boston Time
Taylor Yeracaris / Hilary Lerner
Enroll
March Exploratory Circle
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This special one-session circle is a chance to experience the engaging and collaborative nature of math circles and discover whether it’s the right fit for your child.

Participants will be grouped according to age and math level to ensure a positive and meaningful experience.

Note: This circle is exclusively for those who have not yet participated in math circles run by The Global Math Circle.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
5-7 years old | 8-10 years old | 11-13 years old
March 8, 2026
March 8, 2026
Sunday
30 USD
1
1PM-2:30PM Los Angeles Time 4PM-5:30PM Boston Time
The Global Math Circle
Enroll
[WAITLIST OPEN] Discovering Dice
Apply

Let's dive into dice! Specifically, we'll develop a theory of irregular dice, whether strangely shaped or labeled with irregular numbers, and look at how those dice can be combined. Join us as we roll through the depths of probability and combinatorics! Dice games will never look the same again.

Note: There are no prerequisites for this circle.

This circle is now open for waitlist. If we receive enough interest, we may be able to open a second section.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
9-11 years old
January 26, 2026
March 23, 2026
Mondays
240 USD
8
2:30PM-3:30PM Los Angeles Time 5:30PM-6:30PM Boston Time
Taylor Yeracaris
Enroll
Barry, The Capybara
Apply

Barry, the Capybara, was rescued by our friends from the Magic School, and now he has decided to explore a very special and mysterious place called T Island. But as soon as Barry arrived, he lost his friend Chico the Chick. To find him, Barry will need to solve cryptography puzzles and some wild graph challenges. He will have to ask for help from the mermaids and even from the dragons as he begins his quest to find his lost friend.

Note: There are no prerequisites for this circle.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
6-8 years old
January 25, 2026
March 29, 2026
Sundays
300 USD
10
10AM-11AM Los Angeles Time 1PM-2PM Boston Time
Dani Motta
Enroll
[WAITLIST OPEN] Playing Pool
Apply

This circle will investigate the behavior of lasers as they bounce off or get stuck in the walls of an enclosure. We will ask many questions such as: can we predict if the beam will end? How far will it travel? How precisely can we track the path of this laser? We will explore through pictures and numbers, strategy and discussion to hopefully find intriguing patterns.

Note - Circle Prerequisites:
(1) Comfort with multiplication and division
(2) Hasn't studied number theory extensively

This circle is now open for waitlist. If we receive enough interest, we may be able to open a second section.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
8-10 years old
January 22, 2026
March 19, 2026
Thursdays
270 USD
9
4:30PM-5:30PM Los Angeles Time 7:30PM-8:30PM Boston Time
Sam Reiter
Enroll
Elsewhere in Geometry
Apply

This circle will invite students to explore “what-if” versions of geometry — what if distance worked differently, or familiar shapes followed new rules? By gently altering these basics, we will uncover how entirely new mathematical worlds can emerge.

Note: There are no prerequisites for this circle.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
11-13 years old
January 22, 2026
March 26, 2026
Thursdays
300 USD
10
5PM-6PM Los Angeles Time 8PM-9PM Boston Time
Jayasree Subramanian
Enroll
Barry, Lost in Space
Apply

Barry is a very curious capybara. He and his best friend, Chico the Chick, love looking at the stars. One day, Barry began wondering how he could build a rocket to travel into space and see the stars up close. After a lot of studying, he actually figured out how to get there!

But there was one small problem… He forgot to plan how to get back to Earth. Now Barry and Chico are lost in space, and they need to use all of their algebra skills to find a way home. Can you help them return?

Note: There are no prerequisites for this circle.

Age Group:
Start Date:
End Date:
Days:
Tuition:
# of Sessions:
Time:
5-7 years old
January 21, 2026
March 25, 2026
Wednesdays
300 USD
10
3PM-4PM Los Angeles Time 6PM-7PM Boston Time
Dani Motta
Enroll
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