TY  - BOOK
AU  - Mangaoang, Melda J. 
TI  - Challenges and issues in teaching mathematics in the mother tongue / 
U1  - TH 372.7 M31c 2020 
PY  - 2020///
CY  - Polytechnic College of La Union : 
PB  - [s.n.], 
KW  - Elementary education.
KW  - Mathematics.
N1  - Bibliography: pages 85-86
ER  -