@inproceedings{ Perry-_Castro-_Valero-_GÓMEZ_Agudelo-:257-257,

author = { P. Perry- and Mauricio Castro- and Paola Valero- and PEDRO GÓMEZ GUZMÁN and Cecilia Agudelo- } ,

title = { A LOOK AT TEACHER¿S PROFESSIONAL KNOWLEDGE THROUGH THE DESIGN OF CLASS ACTIVITIES },

booktitle = { CONFERENCE OF THE INTERNATIONAL GROUP FOR THE PSYCHOLOGY OF MATHEMATICS EDUCA (21.1997.LATHI, FINLAND) },

year = { 1997 },

pages = { 257 - 257 },

location = { LATHI, FINLAND },

}