Jurnal Riset Pendidikan Matematika最新文献

{"title":"The relationship of students’ prior knowledge and emotional intelligence to mathematical connection ability","authors":"M. D. Siagian, S. Suwanto, Rosliana Siregar","doi":"10.21831/JRPM.V8I1.39182","DOIUrl":"https://doi.org/10.21831/JRPM.V8I1.39182","url":null,"abstract":"Students should have a good mathematical connection ability to support their learning success. Many factors affect the mathematical connection ability, in­cluding prior knowledge and emotional intelligence. This study aimed to des­cribe the simultaneous and partial effect of students’ prior knowledge and emo­tional intelligence on mathematical connection ability. This study involved 34 ninth graders of one of the public junior high schools in Lembang Regency, Indonesia, as the sample. The data was collected using a test consisting of a prior knowledge test and a mathematical connection ability test on the circle topic, and a questionnaire to measure students’ emotional intelligence. We ana­lyzed the collected data by descriptive statistics, multiple regression, and partial correlation. The results revealed that the prior knowledge and emotional intelli­gence together had a significant effect on mathematical connection ability, with a contribution of 23.6%. In addition, there was a significant positive effect bet­ween prior knowledge and mathematical connection ability with a contribution of 75.1% and a significant positive effect between emotional intelligence and mathematical connection ability with a contribution of 12.2%.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43888930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High school students’ attitudes toward mathematics and its relation to mathematics learning achievement","authors":"Khairiani Idris, Khazila Khazila, Agustina Agustina, L. Lisa","doi":"10.21831/JRPM.V8I1.37002","DOIUrl":"https://doi.org/10.21831/JRPM.V8I1.37002","url":null,"abstract":"Attitudes toward mathematics have been acknowledged among factors related to students’ mathematics learning achievement. The positive attitudes may de­crease when the education level getting higher. This study applied a mixed-method approach to describe students’ attitudes toward mathematics and to analyze the correlation between attitudes toward mathematics and mathematics learning achievement among students in the coastal area of Aceh Province, spe­cifically in Lhokseumawe City and North Aceh Regency. Total of 481 eleventh graders completed attitudes toward mathematics questionnaire online and 19 of them were involved in semi-structured interview. Data of mathematics learning achievement was obtained from students’ scores in their report card of the pre­vious semester. Data analyses were conducted by using Spearman’s correlation and chi-square test. The results of the study revealed that attitudes toward mathematics have a weak negative correlation but significant with mathematics learning achievement. This shows that there is a small percentage of students who have low learning achievement in mathematics tend to have a positive attitude towards mathematics in the high category, while students with high achievement on the contrary. Based on the results of the study, we provide seve­ral suggestions regarding learning mathematics and the direction of further research.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46710091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a web-based worksheet with a project-based learning model assisted by GeoGebra","authors":"E. E. Muchlis, N. Priatna, J. Dahlan","doi":"10.21831/JRPM.V8I1.40985","DOIUrl":"https://doi.org/10.21831/JRPM.V8I1.40985","url":null,"abstract":"Previous studies on the use of GeoGebra in mathematics learning were more focused on implementation and effectiveness in learning outcomes. However, not many studies focus on providing opportunities to students to explore Geo­Gebra to find concepts in plane geometry through developing an application. Therefore, this research and development applied a 4D model to produce a web-based worksheet using project-based learning (PjBL) assisted by GeoGebra that was valid, practical, and effective in the plane geometry course. The web-based worksheet intended to facilitate students to be independent, creative, and able to find the concepts in the plane geometry course through exploration activities using GeoGebra. The results of the data analysis revealed that this research and development produced a web-based worksheet using PjBL assisted by Geo­Gebra that was valid, practical, and effective. The validity of the web-based student worksheet was shown from the validation results explaining that the worksheet was good in terms of content, construction, and language. The prac­ticality of the worksheet was shown from the results of practitioner assessments and student questionnaires, showing that the web-based worksheet was easy to use and attractive. The effectiveness of the worksheet was shown from the formative assessment results with the interpretation that the use of the web-based worksheet could help students understand the content of plane geometry well.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49562017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An analysis of proportional reasoning ability of junior high school students","authors":"Fitria Mardika, A. Mahmudi","doi":"10.21831/JRPM.V8I1.14995","DOIUrl":"https://doi.org/10.21831/JRPM.V8I1.14995","url":null,"abstract":"This study aims to describe proportional reasoning skills and students’ difficul­ties in solving proportional reasoning problems. The population of this research was 3480 seventh-grade students of state junior high schools in the Yogyakarta region. The samples were 158 students chosen using proportionate stratified random sampling that represent four categories of school (very high, high, me­dium, low) based on the average scores of the national examination in mathe­matics in 2016. Data were collected through essay tests and interviews. Data were analyzed quantitatively and qualitatively. The result showed that the stu­dents in very high and high category schools had moderate proportional rea­soning ability. Students in medium and low category schools had low propor­tional reasoning ability. Students’ difficulties in solving proportional reasoning problems vary based on the type of the problem, such as the difficulty in finding the multiplicative relationship contained in the problem, the difficulty in under­standing the value of inverse proportion, and the difficulty in explaining the obtained solution of the problems.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42823609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semiotics of mathematics problem-solving in Mason’s generalization","authors":"I. Fitriyah, Yuni Arrifadah, Siti Lailiyah","doi":"10.21831/JRPM.V8I1.39621","DOIUrl":"https://doi.org/10.21831/JRPM.V8I1.39621","url":null,"abstract":"Semiotics are signs that include codes, symbols, words, icons, objects, or gestures. This descriptive-qualitative study aimed to describe the semiotics of mathematics problem-solving in Mason’s generalization. Generalization is a finding pattern process in which students will use the different strategies with some semiotics. The subjects were three of 30 eleventh graders from a senior high school in Gresik Regency, Indonesia, that were selected using the purposive sampling technique. Data was collected through documentation, written test, and interview. Data was analyzed by reducing data, presenting data, and concluding. The results of this study showed that students could present the semiotics of gesture, word, and symbols in the process of Mason’s generalization, even though in several stages or indicators the students could not present semiotics. The absence of semiotics in several stages or indicators was not because students could not do such things, but because students passed or skipped these stages. In the perception of generality stage, the semiotics of gesture, word, and symbols could emerge simultaneously. However, for expression of generality, symbolic expression of generality, and manipulation of generality stage, students did not present the three semiotics’ components simultaneously.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68451502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Learning trajectory berbasis proyek pada materi definisi himpunan","authors":"W. Astuti, Ariyadi Wijaya","doi":"10.21831/JRPM.V7I2.16483","DOIUrl":"https://doi.org/10.21831/JRPM.V7I2.16483","url":null,"abstract":"Tujuan penelitian ini adalah untuk mendeskripsikan learning trajectory ber­basis proyek yang dilalui siswa untuk memahami definisi himpunan. Penelitian desain ini menggunakan model Gravemeijer dan Cobb dengan tahapan yang terdiri atas: (1) preparing for the experiment yang mencakup penyusunan hypo­thetical learning trajectory (HLT); (2) design experiment yang mencakup pe­laksanaan pembelajaran berdasarkan HLT yang telah dirancang; dan (3) retro­spective analysis, yaitu membandingkan HLT dengan pembelajaran yang dilak­sanakan. Pengembangan HLT menjadi learning trajectory diperoleh melalui serangkaian aktivitas yang dilaksanakan dengan pengumpulan data melalui dokumentasi, observasi, dan wawancara dengan guru dan siswa untuk meng­klarifikasi dan mengonfirmasi alur belajar. Hasil penelitian mengindikasikan bahwa pembelajaran berbasis proyek dapat memfasilitasi siswa dalam mema­hami definisi himpunan. Learning trajectory definisi himpu­nan berbasis proyek diperoleh melalui serangkaian aktivitas dengan empat level pemodelan. Level situasional berupa aktivitas survei kumpulan objek di sekolah. Pada level refe­rensial, istilah “ciri-ciri yang sama”, “dapat didefinisikan”, dan “objek tambah­an”, dan “kesepakatan” muncul melalui diskusi. Pada level generalisasi, siswa me­nuliskan himpunan dalam bentuk yang lebih umum. Ter­akhir, pada level for­mal, pemahaman yang siswa peroleh dari setiap aktivitas merupakan modal un­tuk membangun konsep tentang definisi himpunan.Project-based learning trajectory on the definition of the set topicAbstractThis research aimed to describe the project-based learning trajectory pass­ed through by students to understand the set definition. This design research used Gravemeijer and Cobb model with stages: (1) preparing for the experiment that includes developing hypothetical learning trajectory (HLT); (2) design of expe­riments which includes learning practices implementation based on the deve­loped HLT; and (3) retrospective analysis, which was to compare HLT with learning practices. The development of HLT into a learning trajectory was ob­tained through a series of activities carried out by collecting data through docu­mentation, observation, and interviews with the teacher and students to clarify and confirm the learning trajectory. The results indicated that project-based learning could facilitate students to understand the definition of set. The lear­ning trajectory was obtained through a series of acti­vities with four levels of modeling. The situational level was in the form of a survey activity aimed to collect objects in the school area. At the referential level, the terms “common features”, “definable”, “additional objects”, and “agree­ment” emerged thro­ugh discussion. At the generalization level, students wrote the set in a more general form. Lastly, at the formal level, the under­standing that students get from each activity was a provision to construct a concept about set definition.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47429448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kontribusi kompetensi guru matematika SMP terhadap prestasi belajar siswa","authors":"Tika Abri Astuti, Jailani Jailani","doi":"10.21831/JRPM.V7I2.16453","DOIUrl":"https://doi.org/10.21831/JRPM.V7I2.16453","url":null,"abstract":"Penelitian ini bertujuan untuk mendeskripsikan kontribusi kompetensi guru matematika SMP terhadap prestasi belajar siswa. Kompetensi guru dikelompok­kan ke dalam empat ranah, yaitu kompetensi pedagogik, profesional, sosial, dan kepribadian. Penelitian ini merupakan penelitian survei. Data penelitian dikum­pulkan melalui angket, data sekunder hasil Ujian Kompetensi Guru (UKG) tahun 2015, dan nilai UAS siswa kelas VII tahun ajaran 2016/2017. Populasi penelitian adalah guru matematika SMP di Kabupaten Sleman dengan sampel pene­litian sebanyak 72 guru. Sampel ditentukan dengan proportional random sam­pling. Untuk mengetahui hubungan antara variabel kompetensi guru dan pres­tasi belajar siswa digunakan analisis Partial Least Squares Structural Equation Modeling (PLS-SEM). Hasil penelitian mengungkapkan bahwa: (1) kompe­tensi guru dapat menjelaskan prestasi belajar siswa sebesar 44,7%; (2) terdapat kontribusi positif dan signifikan antara kompetensi pedagogik dan kom­petensi profesional terhadap prestasi belajar siswa dengan nilai prediksi secara bertu­rut-turut yaitu 0,247 (t = 1,97, p 0,05) dan 0,248 (t = 2,343, p 0,05); dan (3) kompetensi sosial dan kepribadian tidak berpengaruh signifikan ter­hadap pres­tasi belajar siswa dengan nilai prediksi secara berturut-turut yaitu 0,227 (t = 1,316, p 0,05) dan 0,070 (t = 0,410, p 0,05) Contribution of junior high school mathematics teacher competence on student’s achievementAbstractThis research aimed to describe the contribution of junior high school mathe­matics teacher competence to student achievement. Teacher competence was grouped into four domains, namely pedagogic, professional, social, and perso­nality. This research was survey research. The research data was collected through a questionnaire, secondary data on the 2015 teacher com­petency exa­mination results, and the seventh-grade students’ final school exa­mination sco­res for the 2016/2017 academic year. The population was junior high school mathematics teachers in Sleman Regency, Indonesia, with a sample of 72 tea­chers. The sample was determined by proportional random sampling. To deter­mine the relationship between teacher competence and students’ lear­ning achi­evement, we used Partial Least Squares Structural Equation Modeling (PLS-SEM) analysis. The results of the study revealed that: (1) teacher compe­tence could explain students' achievement by 44.7%; (2) there was a positive and significant contribution between pedagogic competence and professional com­petence on students’ achievement with a predictive value of 0.247 (t = 1.97, p 0.05) and 0.248 (t = 2.343, p 0.05), respectively; and (3) social and perso­nality competence did not had a significant effect on student achievement with predictive values of 0.227 (t = 1.316, p 0.05) and 0.070 (t = 0.410, p 0.05), respectively.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47342646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Keefektifan model pembelajaran CORE ditinjau dari kemampuan koneksi matematis, representasi matematis, dan kepercayaan diri siswa","authors":"Eka Dyah Puspita Sari, Karyati Karyati","doi":"10.21831/JRPM.V7I2.35487","DOIUrl":"https://doi.org/10.21831/JRPM.V7I2.35487","url":null,"abstract":"Penelitian ini bertujuan untuk menguji dan mendeskripsikan keefektifan model pembelajaran CORE (Connecting, Organizing, Reflecting, Extending) ditinjau dari kemampuan koneksi matematis, representasi matematis, dan kepercayaan diri siswa SMP kelas VIII. Penelitian ini adalah penelitian kuasi eksperimen dengan nonequivalen pretest-postest control-group design. Populasi penelitian adalah seluruh siswa kelas VIII SMP Negeri 26 Banjarmasin tahun ajaran 2020/2021. Pengambilan sampel dilakukan secara acak (simple random sampling) sehingga diperoleh kelas VIII B sebagai kelas eksperimen (n = 14) dan kelas VIII D sebagai kelas kontrol (n = 18). Pengumpulan data dilakukan melalui tes kemampuan koneksi matematis, kemampuan representasi matematis, dan angket kepercayaan diri siswa. Analisis data dilakukan secara deskriptif dan inferensial (α = 0,05). Hasil penelitian menunjukkan bahwa model pembelajaran CORE dengan pendekatan saintifik tidak efektif ditinjau dari kemampuan koneksi matematis, kemampuan representasi matematis, dan kepercayaan diri siswa. Namun demikian, model pembelajaran CORE dengan pendekatan saintifik lebih unggul daripada pembelajaran dengan pendekatan saintifik ditinjau dari kemampuan koneksi matematis siswa.The effectiveness of the CORE learning model in term of mathematical connections skill, mathematical representations skill, and self-confidence of studentsAbstractThis study aimed to examine and describe the effectiveness of the CORE (Connecting, Organizing, Reflecting, Extending) learning model in terms of the mathematical connection skills, mathematical representation skills, and self-confidence of eighth-graders. This study was a quasi-experimental study with a nonequivalent pretest-posttest control-group design. The population was all eight graders of junior high school, namely SMP Negeri 26 Banjarmasin, Indonesia, in the academic year of 2020/2021. Sampling was carried out randomly so that class VIII B was selected as the experimental group (n = 14) and class VIII D as the control group (n = 18). The data was collected through tests of mathematical connection skills, mathematical representation skills, and student’s self-confidence questionnaires. Data were analyzed descriptively and inferentially (α = 0.05). The results revealed that the CORE learning model with a scientific approach was ineffective in terms of students’ mathematical connection, representation skills, and self-confidence. However, the CORE learning model with a scientific approach was better than the scientific approach learning in terms of students’ connection skills. ","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45888572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proses metakognisi mahasiswa calon guru matematika dalam memecahkan masalah piramida hitung","authors":"Erlina Prihatnani, Daniel Supriyadi","doi":"10.21831/JRPM.V7I2.36732","DOIUrl":"https://doi.org/10.21831/JRPM.V7I2.36732","url":null,"abstract":"Metakognisi merupakan salah satu faktor penentu keberhasilan seseorang dalam memecahkan masalah. Penelitian kualitatif ini bertujuan untuk men­deskripsikan proses metakognisi mahasiswa calon guru matematika dalam menyelesaikan soal Piramida Hitung (Pitung) yang merupakan permasalahan non rutin terkait operasi bilangan bulat. Subyek penelitian adalah tiga maha­siswa Pendidikan Matematika Universitas Kristen Satya Wacana Salatiga angkatan 2019. Kriteria pemilihan subyek yaitu: mahasiswa yang berhasil memecahkan tiga tantangan dalam Pitung (tepat dua operasi hitung, tepat tiga operasi hitung, dan tepat empat operasi hitung), komunikatif, dan bersedia menjadi subyek. Data dikumpulkan melalui tes tertulis, think aloud, dan wawancara. Hasil penelitian menunjukkan bahwa proses metacognitive awareness (menyadari pengetahuan dan pengalaman terdahulu, menyadari pola strategi yang dibuat, dan menggunakan informasi pada soal untuk penyelesaian masalah), metacognitive regulation (membuat perencanaan, merevisi langkah penyelesaian, memikirkan dan menemukan jawaban lain), dan metacognitive evaluation (menilai kapasitas berpikir, menilai hasil pekerjaan, dan menilai pemahaman diri sendiri) terjadi saat  proses pemecahan masalah dengan bentuk beragam untuk setiap subjeknya. Selain itu, metakognisi juga membantu subyek dalam membuat strategi penyelesaian menjadi lebih efektif. The process of metacognition of prospective mathematics teachers in solving number pyramid problemsAbstractMetacognition was one of the determining factors for a person’s success in problem-solving. This qualitative research aimed to describe prospective tea­chers’ metacognition process in solving the Number Pyramid or Piramida Hi­tung (Pitung) problem, non-routine problems related to integer operations. The subjects were three mathematics education students of Universitas Kristen Satya Wacana Salatiga, Indonesia. The criteria for selecting subjects, namely: students were succeeded in solving three challenges in the Pitung (exactly two-number operations, three-number operations, and four-number operations), communicative, and willing to be the subject. Data were collected using the written test, think aloud, and interviews. The results showed that process of metacognitive awareness (be aware of previous knowledge and experience, be aware of the pattern of strategies created, and use the information in problems for problem-solving); metacognitive regulation (made plans, revised comple­tion steps, think about, and found others answers); and metacognitive eva­luation (assessed thinking capacity, assessed work results, and assessed self-understanding) occurred during the problem-solving process in various forms for each subject. Also, metacognitive helped the subjects in making the comple­tion strategy more effective.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48154380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Penentuan Kuantitas Produksi Kue Brownies yang Optimal pada Model Persediaan Periode Tunggal","authors":"Vini Damayanti, M. Fajar","doi":"10.29313/.V7I1.26931","DOIUrl":"https://doi.org/10.29313/.V7I1.26931","url":null,"abstract":"Abstract. Inventory is an important part of a manufacturing company, both before the production process begins, during the production process or after the production process is complete. Inventory control in a company must be carried out as optimally as possible. Shortage or excess of inventory will cause losses for the company. Holding costs will be large if there is excess inventory. With the availability of inventory management, it can anticipate a surge in demand from consumers. Inventory management is also used to optimize inventory as possible to reduce inventory costs. In this thesis, analyze the optimal quantity of brownie cake production using a single period model. In this model, it must determine the level of inventory, the holding cost of inventory, and the cost of shortage of inventory. Once determined, it can be seen from the optimal brownies cake production results. Based on the results of the data analysis of the optimal quantity of brownie cake production, it can be seen that the optimal of 8 packages or 200 pcs with an expected total cost of  Rp. 12.825.540. \u0000Abstrak. Persediaan merupakan bagian yang penting dalam suatu perusahaan manufaktur, baik sebelum proses produksi dimulai, saat proses produksi berlangsung maupun setelah proses produksi selesai. Pengendalian persediaan dalam suatu perusahaan harus dilakukan seoptimal mungkin. Kekurangan maupun kelebihan persediaan akan dapat menimbulkan kerugian bagi perusahaan. Biaya penyimpanan akan menjadi besar bila terjadi kelebihan persediaan. Dengan adanya manajemen persediaan dapat mengantisipasi lonjakan permintaan dari konsumen. Manajemen persedian juga berguna untuk mengoptimalkan persediaan seoptimal mungkin guna mengurangi biaya persediaan. Pada skripsi ini, di lakukan analisis penentuan kuantitas produksi kue brownies yang optimal dengan menggunakan model periode tunggal. Pada model ini harus menentukan level inventory, biaya simpan, dan biaya kekurangan persediaan. setelah ditentukan maka dapat dilihat hasil produksi kue brownies yang optimal. Berdasarkan hasil analisis data kuantitas produksi kue brownies yang optimal sebanyak 8 pack atau 200 pcs dengan ekspektasi ongkos total Rp. Rp. 12.825.540.","PeriodicalId":31272,"journal":{"name":"Jurnal Riset Pendidikan Matematika","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76009510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}