The main activity of the Brazilian Chapter during 2006 was The 1st International Business Dynamics Congress, in Brasília, from October 18th to 21st. Participation was possible either in person or over the Internet. With English / Portuguese simultaneous translation at most of the sessions, the congress brought together researchers, executives from the public and private sectors, consultants and academics from the national and international communities. Around 80 papers were presented, and the main keynote speakers of the event were Juan Martín Garcia (La Salle, Barcelona) and Paulo Gonçalves (Miami University). The objectives of this congress were to: • facilitate the Brazilian public’s contact with the System Dynamics’ concepts and applications; • contribute to the development of a community of system dynamics’ researches and practitioners; • allow the participation of everyone, on-site or off-site, promoting international exchange of ideas and experiences; The videos of event presentations will be available for streaming starting on July 15, 2007 at The next Congress will be held in Sao Paulo, May 14-16, 2008.