In Singapore, schools are grouped in clusters - called schools clusters. School clusters make up zones. All schools in Singapore belong to one of four zomes. In East Zone, they form a centre of excellence (COE). The East Zone COE for Mathematics organizes a one-day conference every year. This year they focus on mathematics games with students creating and presenting mathematics games at the event.
I gave a keynote lecture to teachers at this year's event on 6 September 2010.