Visible learning: a synthesis of over 800 meta-analyses relating to achievement Add to my reading listDate of publication: 2008Published by: RoutledgeAuthor(s): Professor John Hattie£: Teacher professional learning and development: best evidence synthesis iteration Add to my reading listDate of publication: December 2005Published by: New Zealand Council for Educational Research (NZCER)Author(s): Professor Helen Timperley, Dr Aaron Wilson, Heather Barrar and Irene Fung£:
