DG 20 provided a forum for participants to discuss current issues in upper secondary mathe­ma­tics (USM) education. The team leaders proposed sample questions to reflect such issues, which were approved by other members of the organizing team (OT). These questions were grouped into four themes as follows:

A) Research to practice and vice versa: How do/can we make theoretical principles real in teaching USM? How can practice inform and develop theory? How can new theoretical trends influence practice? Are there any trends in preservice and inservice tea­cher education that can influence USM education research?

B) Tea­chers and learners: How does tea­chers’ know­ledge influence teaching and learning? What are valuable mathe­ma­tical and pedagogical competencies of USM tea­chers? How do the different beliefs, values and cultural backgrounds of tea­chers or students affect teaching and learning? What are appropriate models of instruction and perspectives of learning?

C) Tools and technology: What are appropriate/meaningful uses of technology for USM? What can be the different roles of tools and technologies in the mediation of learning? How can the use of tools and technologies influence students’ cognitive pro­cesses?

D) Curriculum: What are appropriate contents for students with different postsecondary goals? Can new theoretical trends influence school curricula? What are the new curricular trends recently developed in different countries?