Partners from National Education Institute Slovenia and University of Ljubljana with hand in hand with teachers from the associated schools (Gimnazija Jesenice, Ekonomska šola Novo mesto, Gimnazija Frana Miklošiča Ljutomer) in Rimske Toplice are talking with more than 30 highschool teachers about MERIA materials and IBMT approach in slovenian classrooms. We encourage teachers to upgrade and enrich their teaching practice with IBMT and show students that mathematics is interesting, relevant and applicable.