TY - JOUR AU - Meirav Amram AU - Miriam Dagan AU - Sagi Levi AU - Artour Mouftakhov TI - Formalising the use of the centre of mass method in mathematical problems JO - The Teaching of Mathematics PY - 2019 SP - 17 VL - XXII IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM2_2019_XXII_1_a1/ LA - en ID - TM2_2019_XXII_1_a1 ER -