TY  - JOUR
AU  - Jan Hendrik Müller
TI  - Exploring Number-pyramids in the Secondary Schools
JO  - The Teaching of Mathematics
PY  - 2003
SP  - 37 
VL  - VI
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM2_2003_VI_1_a2/
LA  - en
ID  - TM2_2003_VI_1_a2
ER  -