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Math Circle

The Â鶹Çø Math Circle is an opportunity for 6th–8th grade students (typically 11–13 years old) to engage with exciting problems and topics in mathematics. Meetings are led by a professor in the Calvin math department and typically begin with a warmup activity or game that leads into the day's problem or topic. The Math Circle seeks to generate enthusiasm for problem-solving in mathematics. Students also discover applications of mathematics and participate in a community that nurtures critical thinking, communication, and abstraction. If you have questions about whether Math Circle may be right for your student, please call or send email!

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Time & Location

We meet at Â鶹Çø in North Hall 276. Parking is available in Lot 5 (west of the engineering building) and Lot 6 (west of the aquatic center). ÌýMeetings for Fall 2025 will be on Tuesdays from September 30 to November 18.

  • 3:45–4:00 p.m.: setup and arrival
  • 4:00–5:15 p.m.: main activity
  • 5:15 p.m.: dismissal

Cost & Application

  • Tuition is $80 per semester
  • Registration is via the Calvin "storefront"Ìý
  • At the first meeting please bring a signed copy of the

Calendar (Fall 2025)

DAYTIMEROOMTOPICPRESENTER
Tuesday, September 304:00–5:15 p.m.NORTH HALL 276To be determined ÌýTo be determined ÌýÌý ÌýÌýÌý
Tuesday, October 74:00–5:15 p.m.NORTH HALL 276ÌýÌý
Tuesday, October 144:00–5:15 p.m.NORTH HALL 276ÌýÌý
Tuesday, October 214:00–5:15 p.m.NORTH HALL 276ÌýÌý
Tuesday, October 284:00–5:15 p.m.NORTH HALL 276ÌýÌý
Tuesday, November 44:00–5:15 p.m.NORTH HALL 276ÌýÌý
Tuesday, November 114:00–5:15 p.m.NORTH HALL 276ÌýÌý
Tuesday, November 184:00–5:15 p.m.NORTH HALL 276ÌýÌý

Calendar (Winter 2025)

DAYTIMEROOMTOPICPRESENTER
Tuesday, February 44:00–5:15 p.m.NORTH HALL 276Amida-KujiProf. Jan Koop Ìý Ìý
Tuesday, February 114:00–5:15 p.m.NORTH HALL 276Water Jugs and UPCSProf. Mike Bolt
Tuesday, February 184:00–5:15 p.m.NORTH HALL 276Number BraceletsProf. Jan Koop
Tuesday, February 254:00–5:15 p.m.NORTH HALL 276Rational TanglesProf. Dave Klanderman
Tuesday, March 44:00–5:15 p.m.NORTH HALL 276Frogs and ToadsÌýProf. Mike Bolt
Tuesday, March 114:00–5:15 p.m.NORTH HALL 276Modular BraceletsProf. Jan Koop
Tuesday, March 184:00–5:15 p.m.NORTH HALL 276Ruler GameProf. Mike Bolt
Tuesday, March 254:00–5:15 p.m.NORTH HALL 276Factors and MultiplesProf. Jan Koop

Calendar (Fall 2024)

DAYTIMEROOMTOPICPRESENTER
Tuesday, October 14:00–5:15 p.m.NORTH HALL 276Consecutive SumsProf. Jan KoopÌý Ìý Ìý
Tuesday, October 84:00–5:15 p.m.NORTH HALL 276Mirror, MirrorProf. Mike Bolt
Tuesday, October 154:00–5:15 p.m.NORTH HALL 276TaxmanProf. Jan KoopÌý
Tuesday, October 224:00–5:15 p.m.NORTH HALL 276Pennies and PaperclipsProf. Mike Bolt
Tuesday, October 294:00–5:15 p.m.NORTH HALL 276Pentomino PuzzlesProf. Jan Koop
Tuesday, November 54:00–5:15 p.m.NORTH HALL 276Dragon FractalProf. Mike Bolt
Tuesday, November 124:00–5:15 p.m.NORTH HALL 276FractalsProf. Jan Koop
Tuesday, November 194:00–5:15 p.m.NORTH HALL 276Josephus Problem Ìý Ìý Ìý Ìý Ìý ÌýProf. Mike Bolt

Calendar (Winter 2024)

DAYTIMEROOMTOPICPRESENTER
Tuesday, January 304:00–5:15 p.m.NORTH HALL 276The 2024 ChallengeProf. Jan KoopÌý Ìý Ìý
Tuesday, February 64:00–5:15 p.m.NORTH HALL 276Last One StandingProf. Mike Bolt
Tuesday, February 134:00–5:15 p.m.NORTH HALL 276One-Cut FiguresProf. Jan Koop
Tuesday, February 204:00–5:15 p.m.NORTH HALL 276Multiplier GraphsProf. Mike Bolt
Tuesday, February 274:00–5:15 p.m.NORTH HALL 276New RecruitsÌýProf. Jan Koop
Tuesday, March 54:00–5:15 p.m.NORTH HALL 276Days of the WeekProf. Mike Bolt
Tuesday, March 124:00–5:15 p.m.NORTH HALL 276Skyscraper PuzzlesÌýÌýProf. Jan Koop
Tuesday, March 194:00–5:15 p.m.NORTH HALL 276Take AwayÌý Ìý Ìý ÌýProf. Mike BoltÌý Ìý Ìý Ìý ÌýÌý

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Additional Info

The Math Circle is an enrichment activity that explores topics generally outside the regular mathematics curriculum. It is for 6th-8th grade students (typically 11–13 years old) who are interested in problem-solving and applications.

Program directors are Professors Mike Bolt (mike.bolt@calvin.edu) and Jan Koop (kooj@calvin.edu).

The Â鶹Çø Math Circle was formed in Fall 2017 and is supported by the Department of Mathematics and Statistics, the Office of the Provost, and the Office of College Access Programs.

Math Circles originated in Russia in the 1930s, appeared in the United States in the 1990s, and are promoted by the . Nearby circles include the (Ann Arbor, MI) and the (Dearborn, MI).

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