TY  - BOOK
AU  - De Leon, Joel P,
AU  - Llagas, Avelina T.,
TI  - Development and validation of manipulative learning activities
AV  - QA461 .D377 2015
PY  - 2015///
KW  - Geometry--Study and teaching
N1  - Thesis
UR  - https://forms.gle/7LqvGGkaDrUQqz429
ER  -