PINZON-SALCEDO, L.; BARROS, R.; ZARAMA, R.; DE MEZA, M.; CARULLA, C.; BEJARANO, A. Using systems thinking and social network theory to improve children’s mathematical problem solving skills. Proceedings of the 52nd Annual Meeting of the ISSS - 2008, Madison, Wisconsin, v. 3, n. 1, 4 Jul. 2008.