TY  - BOOK
AU  - Hattie,John
TI  - Visible learning: a synthesis of meta-analyses relating to achievement 
SN  - 9780415476188 (pbk.) :
PY  - 2009///
CY  - London
PB  - Routledge
KW  - Learning
KW  - Longitudinal studies
KW  - Teaching
KW  - Effective teaching
KW  - Teacher effectiveness
N1  - Includes bibliographical references and index
ER  -