“…During this period, several studies were also conducted focusing on identifying knowledge, attitudes, behaviours and environmental competences of pre-service teachers (Amirshokoohi, 2010;Esa, 2010;Midwinter, 2005;Pe'er, Goldman, & Yavetz, 2007;Saka, S€ urmeli, & € Oztuna, 2009;Yavetz, Goldman, & Pe'er, 2009) and the assessment of training programmes and proposals of new pre-service teacher training models (Beckford, 2008;Ferreira, Ryan, & Tilbury, 2007;Firth & Winter, 2007;Geli, Junyent, & Arbat, 2005;Heimlich, Braus, Olivolo, McKeown-Ice, & Barringer-Smith, 2004;Junyent, 2001;Mastrilli, 2005). Even so, in 2009, at the UNESCO World Conference of Education for Sustainable Development, in both the interventions and the final declaration (the so-called Bonn Declaration), there continued to be a call for efforts to integrate education concerning sustainable development into teacher training programmes (UNESCO, 2009).…”