with materials delivered online by Maths Week Ireland. Most schools run their own special activities. Maths Week is a nine-day event (a Saturday to the Sunday of the following weekend, inclusive) which always includes the 16th of October, the day in 1843 when William R. Hamilton discovered quaternions. The idea has been so successful that it has now been replicated in England and Scotland.

MWI hosts the Maths Ireland website which is home to the monthly blogs of the Annals of Irish Mathematics & Mathematicians (AIMM), authored