Abstract
Inclusive mathematics education is a complex and multifaceted, under-researched area where research
often requires collaboration between various fields of study – mathematics education, special education,
pedagogy, psychology, etc. The Thematic Working Group ‘TWG25 – Challenges for Students with
Special Needs’, established in 2019, is one of the platforms opening up space for collaborative research
in this area. This means that TWG25 embraces research in very different fields of mathematics, research
from the point of view of teachers, pupils, teacher education and classroom practices at all school levels
from preschool education to upper secondary, even university level. The presented papers and posters
give the opportunity to share but also to grow aware of what the field of inclusive mathematics education
involves in an international context. Apart from the topics of the single papers and posters more general
questions of inclusive mathematics are discussed in this introduction.