TY  - JOUR
AU  - Bermejo Fernández, Vicente
AU  - Rodríguez Marcos, Purificación
PY  - 1993
DO  - doi.org/10.1016/S0959-4752(09)80005-4
SN  - 0959-4752
UR  - https://hdl.handle.net/20.500.14352/60165
T2  - Learning and instruction : the journal of the European Association for Research on Learning and Instruction
AB  - This study analyzes the bases that support the comprehension ami development of the commutative law of addition. We presented two commutative tasks (compare sums and find the unknown addend)  to 72 children  from  5 to 8 years  of  age.  Within  each ...
LA  - spa
M2  - 55
PB  - Pergamon
TI  - Children's understanding  of the commutative law of addition
TY  - journal article
VL  - 20
ER  -