This book is meant to support problem-oriented learning activities. Problem-orientation concerns the reasoning about lack of knowledge, while project work includes the ethno methods that are practised when collectives produce scientific knowledge. This book also concerns particular methods related to sociology and social science and their relations to the humanities, technical knowledge and natural science. The aim of the book is to support students in the process, from their first reflections on a relevant question to the finishing moments of report writing. Different steps and situations in the project work are described (eg: concepts, situations, ideas and tools for reflection that may be relevant throughout the project work). The subtitle -- a workbook -- is meant literary as a book that may be used as collective knowledge situations become recognisable for the users.