This document summarizes a 6th transnational meeting on effective mathematics teaching that took place in Wroclaw, Poland from April 25-29, 2016. Schools from Italy, Spain, France, Poland, Turkey, and Romania participated. The goals of the meeting were to collaborate, exchange ideas and best practices, discuss items for an international math competition, and prepare guidelines on arithmetic, geometry, coding, and logic. The agenda included welcoming ceremonies, school visits, workshops, cultural excursions, and a student show. The meeting provided valuable professional experiences for teachers.