This book is a collection of papers from the International Conference on Problem-Based Learning 12th-13th April 2012 organized by the Rovaniemi University of Applied Sciences, Finland. The conference was arranged in cooperation with the Finnish Society for Problem-Based Learning, ProBell, and the University of Lapland. The event gathered about 100 participants from 10 different countries. For over ten years ProBell (www.probell.fi) has organized annually a conference or a seminar in Tampere, Hämeenlinna and Lahti in the Southern Finland. This year the latest research on Problem-Based Learning (PBL) was presented for the rst time in Rovaniemi on the Arctic Circle, which is also home to Santa Claus in Lapland. The themes of the conference, as well as the articles of the book, included several interesting aspect on PBL: Work and Learning, Entrepreneurial Education, Networks and Learning, Learning Spaces and Environments and Identity and Learning. The book is aimed at teachers and researchers from a variety of disciplines, as well as developers, trainers and experts on working life interested in pedagogical development of their practices. The book examines PBL across a range of subjects including economics, education and teacher training, environmental technology, health sciences, human resource management and mathematics.