This study aimed to analyze the effect of problem-based learning on metacognitive abilities in the conjecturing process of junior high school students. To reach this purpose, a mixed-methods design, which is a combination of quantitative and qualitative methods, was used. The quantitative method was used to analyze the metacognitive abilities of the students’ conjecturing process, while the qualitative method was used to explore observation and interview data. The subjects of this study consisted of 60 eighth-grade students. Two learning models were compared, namely the problem-based learning model and the conventional learning model. The metacognitive abilities of students’ conjecturing process were measured by a pattern generalization problem-solving test. After collecting the data and analyzing them through the independent-samples t-test, it was revealed that the PBL had a significant effect on the metacognitive abilities of students’ conjecturing process in solving pattern generalization problems. Finally, based on the results, some conclusions and implications were suggested.

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Penelitian ini bertujuan untuk mengeksplorasi unsur budaya suku mbojo yang terdiri atas rumah tradisional uma (rumah) lengge, tembe (sarung) nggoli, alat musik tradisional genda, uma (rumah) jompa, dan kegiatan jual beli masyarakat suku mbojo di pasar. Metode yang digunakan dalam penelitian ini adalah penelitian kualitatif eksplorasi dengan pendekatan etnografi. Pada pendekatan etnografi, peneliti perlu menggali suatu konsep atau masalah dengan menelaah suatu kejadian atau peristiwa. Penelitian kualitatif mendeskripsikan dan memahami suatu fenomena sosial yang berada di sekitar lingkungan masyarakat. Metode penelitian yang digunakan untuk memperoleh data berupa wawancara, eksplorasi, observasi, dan dokumentasi yang dilakukan oleh peneliti. Hasil penelitian menunjukkan bahwa; (1) pada tembe (sarung) nggoli terdapat konsep matematika yaitu geometri transformasi, segitiga samasisi, segiempat “belah ketupat”; (2) pada uma jompa terdapat konsep matematika yaitu bangun ruang gabungan kubus dan prisma segiempat, persegi panjang pada beberapa bagian penyusun uma jompa; (3) pada kegiatan jual beli masyarakat suku mbojo terdapat konsep matematika yaitu konsep pengukuran

Mathematics is considered as a subject that still far from reality and culture. Historically, mathematics has closely related to everyday life, including culture in Lombok West Nusa Tenggara. This culture can explore mathematical concepts to bring mathematics closer to reality and people's perceptions and cultural aspects as the basis for learning mathematics in schools. Therefore, this study explores the elements of geometry transformation in the weaving of the Sasak Sukarara tribe of Central Lombok from an ethnomathematics point of view. This research is qualitative research embracing an ethnographic approach. Data collection methods were carried out through observation and interviews with cultural leaders and native weavers from Sukarara, Central Lombok. The data analysis technique in this study used content analysis and triangulation techniques. The content analysis technique provides detailed data dealing with the weaving culture and habits of the research subjects carried out at the research location. The data source triangulation technique was carried out by comprehensively exploring the relationship between the mathematical knowledge system and the weaving motif culture and looking at the mathematical conceptions that exist in the Sukarara weaving motif. This study showed that in the motifs of wayang, subahnale, keker, four stars, and alang/lumbung, the concepts of reflection and translation could be used as learning resources for geometry transformation materials.

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