TY  - BOOK
AU  - Hattie, John A. C.
TI  - Visible learning: A synthesis of over 800 meta-analyses relating to achievement
SN  - 0415476171
AV  - LB1060 .H38 2009 C.1
PY  - 2009///
CY  - London
PB  - Routledge
KW  - Learning
KW  - Longitudinal studies
KW  - Teaching
KW  - Effective teaching
KW  - Teacher effectiveness
ER  -