There will be three to four parallel working groups addressing different topics in numerical cognition research related to the expertise areas of the speakers. The goal of these working groups is work out first ideas for future collaborative research based on but also beyond topics and approaches presented in introductory and focused lectures. Results and topics discussed in the respective groups will be presented at the last day of the school to share experiences, questions and future steps with the plenum. Guidelines as to practices and aims within these working groups will be handed out to the group leaders by the organizing committee in advance. Working groups will, for instance, include the topics (1) transfer of results from basic research to education sciences, (2) a clinical perspective on numerical cognition research, (3) portable technologies.