Joserra Díez. Senior Lecturer at the department of Mathematics and Experimental Sciences Didactics of the University of the Basque Country, at the University School of Teacher Training in Vitoria-Gasteiz. He obtained his PhD in Stream Ecology (2000). He has been involved in research projects about stream complexity and its effects on ecosystem functioning regarding the interaction of land and river ecosystems. He has also worked as consultant in the planning and conservation of protected areas and as scientific adviser on river restoration projects. His current research interests focus on stream restoration and on Science Education, specially in the development and assessment of curricular materials related with the water cycle and with Earth and Life Sciences for University and Secondary Education.