{"id":"https://openalex.org/W25244573","doi":null,"title":"Investigating Indonesian students' difficulties in initial algebra","display_name":"Investigating Indonesian students' difficulties in initial algebra","publication_year":2012,"publication_date":"2012-11-05","ids":{"openalex":"https://openalex.org/W25244573","mag":"25244573"},"language":"en","primary_location":{"id":"pmh:oai:dspace.library.uu.nl:1874/272369","doi":null,"is_oa":true,"landing_page_url":"https://dspace.library.uu.nl/handle/1874/272369","pdf_url":null,"source":{"id":"https://openalex.org/S4306401649","display_name":"Utrecht University Repository (Utrecht University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I193662353","host_organization_name":"Utrecht University","host_organization_lineage":["https://openalex.org/I193662353"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Conference lecture"},"volume":null,"type":"conference-paper","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://dspace.library.uu.nl/handle/1874/272369","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5040207356","display_name":"Al Jupri","orcid":"https://orcid.org/0000-0002-0485-4332","observed_orcids":["https://orcid.org/0000-0002-0485-4332"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Al Jupri","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-0485-4332","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5085553542","display_name":"Paul H. M. Drijvers","orcid":"https://orcid.org/0000-0002-2724-4967","observed_orcids":["https://orcid.org/0000-0002-2724-4967"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Paul Drijvers","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-2724-4967","affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5072551558","display_name":"Marja van den Heuvel\u2010Panhuizen","orcid":"https://orcid.org/0000-0002-3985-7576","observed_orcids":["https://orcid.org/0000-0002-3985-7576"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M.H.A.M. van den Heuvel-Panhuizen","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.00439119,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":93},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"9"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12522","display_name":"Mathematics Education and Pedagogy","score":0.8651999831199646,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T12522","display_name":"Mathematics Education and Pedagogy","score":0.8651999831199646,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10130","display_name":"Mathematics Education and Teaching Techniques","score":0.09920000284910202,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T14079","display_name":"Mathematics Education and Programs","score":0.013399999588727951,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/algebra-learning-difficulties","display_name":"algebra learning difficulties","score":0.7639999985694885},{"id":"https://openalex.org/keywords/initial-algebras","display_name":"initial algebras","score":0.800000011920929},{"id":"https://openalex.org/keywords/indonesian-students","display_name":"Indonesian students","score":0.7009999752044678},{"id":"https://openalex.org/keywords/timss-2007","display_name":"TIMSS 2007","score":0.9589999914169312},{"id":"https://openalex.org/keywords/mathematization","display_name":"mathematization","score":0.7599999904632568},{"id":"https://openalex.org/keywords/algebraic-expressions","display_name":"algebraic expressions","score":0.9919999837875366},{"id":"https://openalex.org/keywords/arithmetic-operations","display_name":"arithmetic operations","score":0.7490000128746033},{"id":"https://openalex.org/keywords/equals-sign","display_name":"equals sign","score":0.6629999876022339},{"id":"https://openalex.org/keywords/variables","display_name":"variables","score":0.8820000290870667},{"id":"https://openalex.org/keywords/seventh-grade-students","display_name":"seventh grade students","score":0.4620000123977661}],"concepts":[{"id":"https://openalex.org/C2779207338","wikidata":"https://www.wikidata.org/wiki/Q9240","display_name":"Indonesian","level":2,"score":0.8968805074691772},{"id":"https://openalex.org/C2777267654","wikidata":"https://www.wikidata.org/wiki/Q3519023","display_name":"Test (biology)","level":2,"score":0.6227183938026428},{"id":"https://openalex.org/C145420912","wikidata":"https://www.wikidata.org/wiki/Q853077","display_name":"Mathematics education","level":1,"score":0.6169677972793579},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.5667715072631836},{"id":"https://openalex.org/C139676723","wikidata":"https://www.wikidata.org/wiki/Q1193832","display_name":"Sign (mathematics)","level":2,"score":0.5281431674957275},{"id":"https://openalex.org/C198531522","wikidata":"https://www.wikidata.org/wiki/Q485146","display_name":"Sample (material)","level":2,"score":0.47491180896759033},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.41692230105400085},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.16533315181732178},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.1329961121082306},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:dspace.library.uu.nl:1874/272369","doi":null,"is_oa":true,"landing_page_url":"https://dspace.library.uu.nl/handle/1874/272369","pdf_url":null,"source":{"id":"https://openalex.org/S4306401649","display_name":"Utrecht University Repository (Utrecht University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I193662353","host_organization_name":"Utrecht University","host_organization_lineage":["https://openalex.org/I193662353"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Conference lecture"},{"id":"mag:25244573","doi":null,"is_oa":false,"landing_page_url":"https://dspace.library.uu.nl/bitstream/1874/272369/1/12102012.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:dspace.library.uu.nl:1874/272369","doi":null,"is_oa":true,"landing_page_url":"https://dspace.library.uu.nl/handle/1874/272369","pdf_url":null,"source":{"id":"https://openalex.org/S4306401649","display_name":"Utrecht University Repository (Utrecht University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I193662353","host_organization_name":"Utrecht University","host_organization_lineage":["https://openalex.org/I193662353"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Conference lecture"},"sustainable_development_goals":[{"score":0.9235000014305115,"display_name":"Quality education","id":"https://metadata.un.org/sdg/4"}],"study_designs":[{"display_name":"Observational Study","id":"https://openalex.org/study-designs/observational-study"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W159150308","https://openalex.org/W374867912","https://openalex.org/W391094119","https://openalex.org/W593560526","https://openalex.org/W1514187077","https://openalex.org/W1984655437","https://openalex.org/W1991260663","https://openalex.org/W1992274553","https://openalex.org/W1998444813","https://openalex.org/W2050844350","https://openalex.org/W2072267223","https://openalex.org/W2108667386","https://openalex.org/W2121719220","https://openalex.org/W2205831343","https://openalex.org/W2915736078","https://openalex.org/W3201503166"],"related_works":["https://openalex.org/W2085286727","https://openalex.org/W18919605","https://openalex.org/W2990091913","https://openalex.org/W2103088208","https://openalex.org/W7211938709","https://openalex.org/W2951087306","https://openalex.org/W4388618049","https://openalex.org/W3107776554","https://openalex.org/W3122927006","https://openalex.org/W6963076641"],"abstract_inverted_index":{"In":[0],"the":[1,15,21,85,89,100],"Trends":[2],"in":[3,14,36,98],"International":[4],"Mathematics":[5],"and":[6,50,66,92,103],"Science":[7],"Study":[8],"(TIMSS)":[9],"2007,":[10],"Indonesian":[11,33,60],"students\u2019":[12,34],"achievement":[13],"algebra":[16,46],"domain":[17],"was":[18,48],"significantly":[19],"below":[20],"international":[22],"average.":[23],"This":[24],"fact":[25],"leads":[26],"to":[27],"this":[28],"study":[29],"aiming":[30],"at":[31],"investigating":[32],"difficulties":[35,97],"algebra.":[37],"To":[38],"do":[39],"so,":[40],"an":[41],"individual":[42],"written":[43,64,101],"test":[44,102],"on":[45,63],"tasks":[47],"administered":[49],"followed":[51],"by":[52],"interviews.":[53],"A":[54],"sample":[55],"of":[56,68,88,108],"33":[57],"grade":[58],"seven":[59],"students":[61],"worked":[62],"test,":[65],"nineteen":[67],"them":[69],"were":[70],"interviewed":[71],"afterwards.":[72],"Data":[73],"analysis":[74],"revealed":[75],"that":[76],"mathematization,":[77],"understanding":[78,84,93],"algebraic":[79],"expressions,":[80],"applying":[81],"arithmetic":[82],"operations,":[83],"different":[86],"meanings":[87],"equal":[90],"sign,":[91],"variables,":[94],"constituted":[95],"observed":[96],"both":[99],"interview":[104],"data.":[105],"The":[106],"consequence":[107],"these":[109],"findings":[110],"for":[111],"future":[112],"research":[113],"is":[114],"discussed.":[115]},"counts_by_year":[{"year":2019,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}
