TY  - BOOK
AU  - Southall,Ed
TI  - Yes, but why?: teaching for understanding in mathematics 
SN  - 9781473948969
U1  - 510.71 
PY  - 2017///
CY  - Los Angeles
PB  - SAGE
KW  - Mathematics
KW  - Study and teaching
KW  - Algebra
KW  - Trigonometry
N1  - Includes index
ER  -