Fall 2025

Math circle will resume on August 30, 2025 on UNC campus, roughly every other Saturday.

The Mobius Noodles Group for all ages will meet from 9:00 – 10:00 a.m. in Phillips 215.
The Beginners Group will meet from 10:30 – 11:30 a.m. in Phillips 208.
The Elementary Group will meet from 10:30 – 11:30 a.m. in Phillips 206.
The Intermediate Group will meet from 10:30 – 12:00 (noon) in Phillips 224
The Advanced Group will meet from 10:30 – 12:00 (noon) in Phillips 220.

This schedule is tentative and may be changed.

Date	Mobius Noodles Topic	Beginners Topic and Elementary Topic	Intermediate Topic	Advanced Topic
Sat, Aug 30	Impressionist Art and Infinite Sequences (Maria Droukova and Dmitri Droujkov)	Shapes (Dilip Barman) Number Activities (Dorian Varney)	Remainders and Divisibility (Scott Hallyburton)	Expected Value Games (Josh Mott)
Sat, Sept 6	Math Circle will not meet.
Sat, Sept 13 (football Saturday)	Math Storytelling Day: Modultown (Maria Droujkova and Dmitri Droujkov)	Counting Diagonals in a Polygon (Dilip Barman) Pigeonhole Principle (Dorian Varney)	Remainders and Divisibility: Part II (Scott Hallyburton)	Pascal’s Triangle (David Yavenditti)
Sat, Sep 20	Math Circle will not meet. Come see our activities at BugFest in Raleigh!
Sat, Sep 27	Ladybugs, Potions, and Integer Partitions (Maria Droujkova and Dmitri Droujkov)	Diagonals, Part 2 (Dilip Barman) Handshake Problems (Dorian Varney)	Modular Arithmetic (Reiyah Jacobs)	Pascal’s Triangle, Cont (David Yavenditti)
Sat, Oct 4 (football Saturday)	Math Circle will not meet.
Sat, Oct 11	Hurricanes and Actuaries: Modeling Insurance (Guest Leader Jerry Tuttle)	Making Change and Repeated Subtractions (Dilip Barman) Map Coloring (Dorian Varney)	Modular Arithmetic: Part II (Reiyah Jacobs)	Lights Out (Josh Mott)
Sat, Oct 18	Math Circle will not meet.
Sat, Oct 25 (football Saturday)	CANCELED (N/A)	Fun with Subtraction (Dilip Barman) The Bridges of Konigsberg (Dorian Varney)	Getting STUCK (Scott Hallyburton)	Graph Theory: Euler Circuits & the Ford-Fulkerson Algorithm (Pavan Kartik and Isaac Weiss)
Sat, Nov 1	Math Circle will not meet.
Sat, Nov 8 (football Saturday)	Factorization Diagrams (Maria Droujkova and Dmitri Droujkov)	Fun with Angles (Dilip Barman) Shape Numbers (Dorian Varney)	Getting STUCK! [Part II] (Scott Hallyburton)	Graph Theory: Part 2 (Pavan Kartik and Isaac Weiss)
Sat, Nov 15	Math Circle will not meet.
Sat, Nov 22 (football Saturday)	Happy Fibonacci Day 2025 (Maria Droujkova and Dmitri Droujkov)	Fibonacci / Pingala Numbers (Dilip Barman) Puppies and Kittens (Dorian Varney)	Mathematical Puzzles (Reiyah Jacobs)	Set Theory and Cardinality (Andrew Paul)
Sat, Nov 29	Math Circle will not meet. Happy Thanksgiving!
Sat, Dec 6	CANCELED due to exams (N/A)	CANCELED due to exams (N/A) CANCELED due to exams (N/A)	CANCELED due to exams (N/A)	CANCELED due to exams (N/A)

Many of the problems we choose come from books in the MSRI-AMS Mathematical Circles Library.