TY  - JOUR
AU  - D. Okada
AU  - T. Matsuura 
TI  - Japanese Astronomy Curriculum in Schools and the Spatial Cognitive Ability of Elementary and Junior High School Students
JO  - Journal for geometry and graphics
PY  - 2018
SP  - 139
EP  - 147
VL  - 22
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2018_22_1_JGG_2018_22_1_a12/
ID  - JGG_2018_22_1_JGG_2018_22_1_a12
ER  -