Children solve math exercises and puzzle games during the math festival "MatBaires", in Buenos Aires city, Argentina, on Sept. 14, 2013. One of the main objectives of the "MatBaires" is that attendees learn more about other less known aspects of mathematics. (Xinhua/Martin Zabala)
A member of the group of artists "Works on Paper" shows one of his works during the math festival "MatBaires", in Buenos Aires city, Argentina, on Sept. 14, 2013. One of the main objectives of the "MatBaires" is that attendees learn more about other less known aspects of mathematics. (Xinhua/Martin Zabala)
Children solve math exercises and puzzle games during the math festival "MatBaires", in Buenos Aires city, Argentina, on Sept. 14, 2013. One of the main objectives of the "MatBaires" is that attendees learn more about other less known aspects of mathematics. (Xinhua/Martin Zabala)
A man and his son try to solve a puzzle game during the math festival "MatBaires", in Buenos Aires city, Argentina, on Sept. 14, 2013. One of the main objectives of the "MatBaires" is that attendees learn more about other less known aspects of mathematics. (Xinhua/Martin Zabala)
Children solve math exercises and puzzle games during the math festival "MatBaires", in Buenos Aires city, Argentina, on Sept. 14, 2013. One of the main objectives of the "MatBaires" is that attendees learn more about other less known aspects of mathematics. (Xinhua/Martin Zabala)
