TY  - BOOK
AU  - Divina, Devie Bandioan 
TI  - Comparative analysis using mathematical models and videos in teaching problem solving to grade 7 students / 
U1  - TH 371.33 D64c 2017  
PY  - 2017///.
CY  - Ilocos Sur Polytechnic State College
PB  - [s.n.]
KW  - Teaching
KW  - Aids and devices
N1  - References: pages 60-64
ER  -