TY  - BOOK
AU  - Verschaffel,Lieven
TI  - Use of external representations in reasoning and problem solving: analysis and improvement 
SN  - 9780415556743 (pbk.)
U1  - 370.1524 
PY  - 2010///
CY  - New York
PB  - Routledge
KW  - Interaction analysis in education
KW  - Thought and thinking
KW  - Problem solving
KW  - Study and teaching
KW  - Learning, Psychology of
N1  - Includes bibliographical references and index.
ER  -