Mathematically gifted students, who have inborn potential and creative productivity, may not achieve grouplevel
creative synergy, although it is important for them to achieve it. Therefore, it is crucial to find beneficial factors, effective
teaching-learning contents and methods to enhance group creativity among them. For this purpose, the delphi method
was adopted. The factors that can affect the manifestation process of group creativity were not only input factors, such as
group members, group structure, climate, and external factors but also process factors, such as cognitive processes and social
processes. In conclusion, teachers should consider those beneficial factors before planning teaching. The teaching-learning
contents for enhancing group creativity are those suitable for mathematically gifted students’ interests and abilities, which
may be categorized as mathematical concept, mathematical process, problem-based, and project-based. The teaching-learning
methods for enhancing group creativity are those suitable for student-centered activity or collaborative knowledge construction,
which may be categorized as teaching method, subject-oriented method, and teaching model. In addition, teachers
should adopt such contents to maximize potential group productivity of mathematically gifted students and apply the methods
that can encourage problem solving or posing for the manifestation of mathematical creativity and collaborative knowledge
construction.