TY  - BOOK
AU  - Aretano, John Wilbert R. 
AU  - Aretano, John Wilbert R. 
TI  - Teaching elementary mathematics for understanding
U1  - DPer050 M72 January-March 2018 v. 66 no. 8-10 
PY  - 2018///
CY  - Philippines; 
PB  - Publishers Association of the Philippines, Inc.
ER  -