This book is a collection of full papers based on the peer-reviewed submissions accepted for the ERIDOB 2020 conference (which was cancelled due to COVID-19). ERIDOB brings together researchers in Biology Education from around the world to share and discuss their research work and results. It is the only major international conference on biology education research, and all the papers therefore are written by international researchers from across Europe (and beyond), which present the findings from a range of contemporary biology education research projects. They are all entirely new papers describing new research in the field. The papers are peer-reviewed by experienced international researchers selected by