TY  - GEN
AU  - John L. Marks
TI  - Teaching elementary school mathematics for understanding / 
SN  - 070404208
U1  - 510,MAR 
PY  - 1970///
CY  - New York
PB  - McGraw-Hill
KW  - Mathematics
N1  - Part One:  Contemporary School Mathematics Curricula (Page-3), Part Two: Directing Learning  (Page-57), Part Three: Special Instruction Procedures  (Page-333)
ER  -