Joep van der Graaf (1986) finished his bachelor’s degree in Cognitive Psychology and his master’s degree in Neuroscience & Cognition, both at the University Utrecht. He then did a PhD at the Behavioural Science Institute at the Radboud University. The topic was scientific thinking in kindergarten. Currently, he is a post-doc at the Radboud University, studying scientific thinking in Grade 4 children. In addition, he is involved in two projects at the University of Twente. Both projects use the digital learning spaces for inquiry learning. The aim of one project is to develop inquiry learning spaces for elementary school children. The other project aims to investigate the role of text processing in knowledge acquisition through inquiry learning. Secondary school children participate in this project.