{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T07:36:41Z","timestamp":1772005001597,"version":"3.50.1"},"reference-count":0,"publisher":"Pontifical Catholic University of Sao Paulo (PUC-SP)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["EMP"],"abstract":"<jats:p>El objetivo de esta investigaci\u00f3n es caracterizar el conocimiento de dos profesoras de matem\u00e1ticas en formaci\u00f3n continua, sobre dificultades de aprendizaje de los alumnos inherentes al contenido matem\u00e1tico de suma de expresiones algebraicas. Ese conocimiento se analiza al planificar, ejecutar y hacer la propuesta de mejora en el tema de adici\u00f3n de expresiones algebraicas para segundo grado de educaci\u00f3n secundaria, utilizando el modelo Mathematical Teacher Specialised Knowledge como herramienta te\u00f3rica y anal\u00edtica. La investigaci\u00f3n consiste de un estudio de caso instrumental a partir de la observaci\u00f3n no participante y los resultados muestran el conocimiento de las profesoras sobre las dificultades de aprendizaje de los alumnos en el tema de adici\u00f3n de expresiones algebraicas, dando tratamiento desde la planificaci\u00f3n.\u00a0<\/jats:p>","DOI":"10.23925\/1983-3156.2019vol21i3p369-397","type":"journal-article","created":{"date-parts":[[2019,12,20]],"date-time":"2019-12-20T11:26:40Z","timestamp":1576841200000},"source":"Crossref","is-referenced-by-count":1,"title":["Conhecimento do professor sobre dificuldades de aprendizagem no t\u00f3pico adi\u00e7\u00e3o de express\u00f5es alg\u00e9bricas no Ensino M\u00e9dio"],"prefix":"10.23925","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5280-6087","authenticated-orcid":false,"given":"Leticia","family":"Sosa","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9629-758X","authenticated-orcid":false,"given":"Marlene Vianney","family":"Guzm\u00e1n Castro","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3505-4431","authenticated-orcid":false,"given":"Miguel","family":"Ribeiro","sequence":"additional","affiliation":[]}],"member":"10019","published-online":{"date-parts":[[2019,12,20]]},"container-title":["Educa\u00e7\u00e3o Matem\u00e1tica Pesquisa : Revista do Programa de Estudos P\u00f3s-Graduados em Educa\u00e7\u00e3o Matem\u00e1tica"],"original-title":[],"link":[{"URL":"https:\/\/revistas.pucsp.br\/emp\/article\/viewFile\/44311\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,12,20]],"date-time":"2019-12-20T11:27:40Z","timestamp":1576841260000},"score":1,"resource":{"primary":{"URL":"https:\/\/revistas.pucsp.br\/emp\/article\/view\/44311"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,12,20]]},"references-count":0,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2019,12,20]]}},"URL":"https:\/\/doi.org\/10.23925\/1983-3156.2019vol21i3p369-397","relation":{},"ISSN":["1983-3156","1516-5388"],"issn-type":[{"value":"1983-3156","type":"electronic"},{"value":"1516-5388","type":"print"}],"subject":[],"published":{"date-parts":[[2019,12,20]]}}}