TY  - BOOK
AU  - Aurapun Tanbanjong
TI  - A comparison of the effectiveness of using and not using manipulative materials in teaching addition and subtraction to first grade students in Bangkok, Thailand
PY  - 1983///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Mathematics
KW  - Thailand
KW  - Study and teaching
KW  - Education, Primary
N1  - Thesis (Doctor of Education)-University of Houston, 1983
ER  -