It is the last school day of Maths Week and we hope that you have had a great week. It’s not over yet - today is Hamilton Day (or Broomsday as it is becoming known). There is the Hamilton Walk and in the evening, the Hamilton Talk. To mark the occasion there is a special poster with today’s Irish Times. There are also events coming over the weekend:

Saturday Castlecourt Shopping Centre, Belfast

Saturday Maths in the Market Yard, Carrick-on-Shannon

Sunday Celebration of Mind at Botanic Gardens Dublin

The puzzles on thejournal.ie will continue til Sunday.

Below find your daily update for Maths Week news!  

Let us know what you’re up to! Follow our social media channels and tag us in your Maths Week activities and events. It’s great to see in what ways teachers are engaging with Maths.

TargetBoards Leaderboard

Good job to the schools that made the TargetBoards leaderboard yesterday, 15 October! There is a real battle on for top spots. New challenge is available today, make sure to give it a try HERE.

What’s On TODAY

Hamilton Day

William Rowan Hamilton (1805-1865) was an Irish mathematician who contributed to the development of optics, dynamics, and algebra. Most notably, he’s known for the discovery of Quaternion which now play a fundamental role in computer games and animation. His work proved significant for the development of quantum mechanics.

Get Your Poster With the Irish Times

Maths Week has designed a special poster for the Irish Times celebrating Hamilton Day and our Maths heritage. There are also puzzles and activities on the back. Get your copy of the Irish Times today with the Maths Week poster!

October 16 at 1:30pm

Dunsink Observatory, Dublin

Hamilton Walk

Retrace Hamilton’s steps from Dunsink Observatory to Broombridge in Cabra where he had his Eureka moment that resulted in the creation of Quaternions.

In an act of mathematical vandalism, Hamilton opened up a whole new mathematical landscape where mathematicians could now feel free to conceive new algebraic number systems that were not shackled by the rules of ordinary numbers in arithmetic. Hamilton freed algebra from arithmetic and he was called the Liberator of Algebra.

October 16 at 6pm

Online, BOOK HERE

The Mysteries of Prime Numbers

RIA Hamilton Lecture

In this year’s Hamilton Lecture, Professor James Maynard will explain why prime numbers are vital, both in pure mathematics and in the real world, and how current mathematics is able to make progress on some of the key questions which have occupied mathematicians going back to the ancient Greeks.

Maths Week TV

Enjoy Maths Week from the comfort of your own classroom with Maths Week TV!

Today’s programmes are:

10:00am | An Tobar Draíochta | Primary

10:30am - 12pm | Dream Space LIVE | Primary and Post-Primary

Maths in the City Belfast

Take part in Maths Games and Puzzles in the heart of Belfast!

The Maths Week team will be at Castlecourt Shopping Centre from 10 - 3pm with activities for all ages.

Market Yard, Carrick on Shannon, N41PX71

Maths in the Market Yard

17 October | Carrick on Shannon

From 9am on Saturday 17th October, Carrick on Shannon comes to life with Maths in the Market Yard. There’ll be something for all ages where families can enjoy fun applications of Maths from counting challenges and lollipop games, to predictions and probability puzzles.

The highlight of the day will be juggling workshops, led by Mr Math Weeney, scheduled to take place at 11am and 1pm, where kids (and adults) of all ages can practice the skills of juggling up to four balls.

Celebration of the Mind

18 October | The National Botanic Gardens, Dublin

The final showpiece event of Maths Week 2026!

Hosted by the Botanic Gardens Dublin, Celebration of the Mind features games, puzzle and teasers from around the world brought to an eager Irish audience. The beautiful surroundings of the Botanic Gardens in Dublin allow people to engage at their own pace with a variety of presenters and volunteers. Welcome to all!

Have you tried last night’s Journal Maths Puzzle?

It’s on Geometry. Answers with today’s puzzle at 7:30pm