The Math Circle resumes this Sunday with a new topic: the Lightbulb Game. You want the lights on – I want them off. Who will win? Math Circle OnlineSunday 23 March 2025 7pm Look to email for login instructions.

We continue our investigation of numbers that extend forever to the left. If we have time, we can start a new topic. Math Circle OnlineSunday 9 March 2025 7pm Look to email for login instructions.

Math Circle resumes this Sunday. We continue our investigation of base 5 numbers that repeat to the left. We’ll conclude with a truly remarkable calculation that results in 527/336. This will require just a smidgen of calculus. Math Circle OnlineSunday 2 March 2025 7pm Look to email for login instructions.

I hope you are enjoying your winter recess. This Sunday, we will do a fun (seemingly simple) activity called The Skyscraper Game. This is an optional session, not really connected to last weeks or next weeks topics. Math Circle OnlineSunday 23 February 2025 7pm Look to email for login instructions.

We continue our investigation of reversimals – decimals that repeat to the left. There’s a problem however… that we can fix by changing from base 10 to base 5. Math Circle OnlineSunday 16 February 2025 7pm Look to email for login instructions.

Kurt and Hensel got into a heated discussion about a number comprised of repeating nines. What exactly was it equal to? Math Circle OnlineSunday 2 February 2025 7pm Look to email for login instructions.

This weekend, continue our investigation of three fractions onward to four fractions. These are fractions of the form 4/n, for example, 4/7. Math Circle OnlineSunday 26 January 2025 7pm Look to email for login instructions.

We investigate a new topic this weekend: three fractions. These are fractions of the form 3/n, for example, 3/14. Time permitting, we will then turn our attention to the more difficult case of four fractions, of the form 4/n. Math Circle OnlineSunday 19 January 2025 7pm Look to email for login instructions.

The Math Circle resumes with our first session of 2025: Teeter Totter Geometry. Mathematics has many applications in physics. But now we are going to flip that around, and use physics to address questions in mathematics. Math Circle OnlineSunday 12 January 2025 7pm Look to email for login instructions.

Please join us for an in-person Math Circle celebration this Sunday! The theme will be Snow Math, and there will also be various puzzles. Refreshments will be served. There is plenty of free parking nearby. Here are the details: Math Circle In PersonNashua Public Library2 Court Street, Nashua NHSunday December 15th 1:00-3:00pm RSVP by email …

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