The aim of this book was to investigate whether the pedagogical practices adopted by the Natural Sciences teacher in mainstream education contribute to the teaching and learning process of Natural Sciences for a student with Autism Spectrum Disorder (ASD). This is a qualitative research study, the typology of which is a case study. The objects of the study were three teachers reporting on a single student with ASD in Primary School II: a science teacher, a Specialised Educational Assistance (AEE) teacher and a subject assistant teacher. The results are interesting, check them out!