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<![CDATA[ANALISIS SOAL UJIAN TENGAH SEMESTER GANJIL PADA MATAKULIAH ALJABAR LINIER ]]>
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Mardika, Fitria]]>
<![CDATA[ MAp (Mathematics and Applications) Journal Vol 1, No 2 (2019) ]]>
Publisher : <![CDATA[Universitas Islam Negeri Imam Bonjol Padang ]]>
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DOI: 10.15548/map.v1i2.1179
<![CDATA[Penelitian ini bertujuan untuk mengetahui kualitas butir soal ujian tengah semester ganjil mahasiswa program studi tadris matematika UIN Imam Bonjol Padang Tahun Ajaran 2018/2019 ditinjau dari tingkat kesukaran, daya pembeda, dan reliabilitas tes. Jenis penelitian ini adalah deskriptif Kuantitatif dengan menggunakan perhitungan statistik.Subjek penelitian mencakup seluruh mahasiswa program stidy Tadris Matematika UIN Imam Bonjol Padang. Butir soal yang digunakan yaitu butir soal Mata Kuliah Aljabar Linear. Hasil penelitian analisis butir soal ujian semester ganjil menunjukkan bahwa reliabilitas termasuk soal yang memiliki Reliabilitas sedang yaitu sebesar 0,48..Berdasarkan Daya Pembeda soal semua soal memiliki indeks pembeda yang signifikan. Berdasarkan Tingkat Kesukaran secara keseluruhan menunjukkan bahwa semua butir soal sedang. Jadi dapat disimpulkan keseluruhan butir soal yang diajukan dalam ujian tengah semester tersebut dapat dipakai.AbstractThis study aims to find out the quality of odd semester midterm exam items for students of the Tadris mathematics study program at Imam Bonjol Padang Academic Year 2018/2019 in terms of difficulty, differentiation, and test reliability. This type of research is descriptive quantitative using statistical calculations. Subjects of the study include all students of the Mathematics Tadris UIN Imam Bonjol Padang program. The items used are items in Linear Algebra. The results of the analysis of odd semester exam items show that reliability includes items that have moderate reliability that is equal to 0.48. Based on the Distinguishing Power, all questions have a significant differentiating index. Based on the overall level of difficulty shows that all items are medium. So it can be concluded that the whole items submitted in the midterm can be used.]]>
<![CDATA[GENERALISASI t-DERIVASI di B-ALJABAR ]]>
<![CDATA[Fitria, Elsi]]>;
<![CDATA[Gemawati, Sri]]>;
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Nurbai, Reihani Jemila]]>
<![CDATA[ MAp (Mathematics and Applications) Journal Vol 3, No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Islam Negeri Imam Bonjol Padang ]]>
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DOI: 10.15548/map.v3i1.2638
<![CDATA[Pada artikel ini didefinisikan konsep generalisasi left-right t-derivasi ((l, r)-t-derivasi) dan generalisasi right-left t-derivasi ((r, l)-t-derivasi) di B-aljabar dan diselidiki sifat-sifatnya. Kemudian, juga diselidiki sifat-sifat dari suatu generalisasi t-derivasi yang regular di B-aljabar. Pada bagian akhir, dibahas sifat-sifat generalisasi (l, r)-t-derivasi dan generalisasi (r, l)-t-derivasi di B-aljabar 0-komutatif.]]>
<![CDATA[The Influence of Smartphone Usage Duration and Frequency on Smartphone Addiction in Early Childhood Using Binary Logistic Regression ]]>
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Samat, N.A]]>;
<![CDATA[Warmansyah, Jhoni]]>
<![CDATA[ JOSTECH Journal of Science and Technology Vol 4, No 2: September 2024 ]]>
Publisher : <![CDATA[UIN Imam Bonjol Padang ]]>
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DOI: 10.15548/jostech.v4i2.9768
<![CDATA[This study aims to identify the influence of smartphone usage duration and frequency on smartphone addiction in early childhood. With the increasing use of technology among children, it is crucial to understand how these factors affect addiction levels. The study employs binary logistic regression to analyze data collected randomly from 100 parents of children aged 4 to 5 years who attend kindergarten in Padang, Indonesia. Smartphone usage duration is measured in hours per day, while frequency of use is measured by the number of uses per day. The analysis results indicate that both the duration and frequency of smartphone use have a significant impact on smartphone addiction. However, based on the odds ratio value, the duration of smartphone use has a more significant influence compared to frequency on addiction levels. These findings provide valuable insights for parents, educators, and policymakers in developing strategies to manage and limit smartphone use in early childhood to prevent addiction risks that could affect their development. This study is expected to serve as a reference for further research and more effective interventions in managing technology use among children.]]>
<![CDATA[Penerapan Pendekatan Matematika Realistik terhadap Kemampuan Pemahaman Konsep Pengukuran pada Anak Usia 5-6 Tahun ]]>
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Yanti, Fitri]]>;
<![CDATA[Warmansyah, Jhoni]]>
<![CDATA[ Aulad: Journal on Early Childhood Vol. 5 No. 2 (2022): August 2022 ]]>
Publisher : <![CDATA[Perkumpulan Pengelola Jurnal PAUD Indonesia ]]>
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DOI: 10.31004/aulad.v5i2.378
<![CDATA[Pentingnya pemahaman konsep pengukuran untuk mengembangkan aspek kognitif anak menjadi latar belakang penelitian ini dengan tujuan untuk mengetahui bagaimana penerapan pendekatan matematika realistik terhadap kemampuan memahami konsep pengukuran anak usia 5-6 tahun. Pendekatan kuantitatif diterapkan pada penelitian ini dengan menggunakan jenis penelitian quasy experiment dan disain penelitian randomized control group only design dimana pemberian perlakuan pada kelas eksperimen menggunakan pendekatan matematika realistik sedangkan kelas kontrol tidak diberi perlakuan (pembelajaran konvensional). Subjek penelitian berjumlah 20 orang anak dengan kelas B1 sebagai kelas eksperimen dan B2 kelas control di TK Permata Bunda, Pagaruyung. Pengumpulan data penelitian menggunakan lembar ceklis observasi dengan pengujian hipotesis menggunakan uji-t. Berdasarkan hasil analisis uji statistik dengan menggunakan uji beda (uji-t) pada taraf signifikan 5% diperoleh t hitung 2,73 lebih dari t tabel yaitu 1,73. Jadi dapat disimpulkan kemampuan pemahaman]]>
<![CDATA[Pembelajaran Matematika Anak Usia Dini di Masa Pandemi COVID-19 Tahun 2020 ]]>
<![CDATA[Amalina, Amalina]]>
<![CDATA[ Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini Vol. 5 No. 1 (2021) ]]>
Publisher : <![CDATA[LPPM Universitas Pahlawan Tuanku Tambusai ]]>
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DOI: 10.31004/obsesi.v5i1.592
<![CDATA[Pentingnya pembelajaran matematika bagi anak usia dini membuat orang tua ikut mengambil peran dalam menanamkan konsep matematika kepada anak disamping pengajaran di sekolah. Namun, sejak pandemi Covid-19 semua kegiatan belajar mengajar harus dilakukan sepenuhnya dari rumah. Oleh karena itu, tulisan ini mengkaji tentang bagaimana pembelajaran matematika bagi anak usia dini yang dilakukan di rumah yang tentunya dibawah pengawasan dan arahan dari orang tua. Melalui Literature review, penelitian ini dapat menjadi salah satu referensi bagi orang tua untuk dapat terus memotivasi anak mereka dalam belajar matematika secara sederhana dan menyenangkan dari rumah di tengah masa pandemi Covid-19. Hasil kajian literatur menunjukkan bahwa pembelajaran matematika bagi anak usia dini dimasa pandemi Covid-19 hendaknya pembelajaran yang menyenangkan dan objek pembelajaran adalah dari hal sederhana yang dekat dengan anak atau hal yang digemari anak. Sesuai dengan hakikat anak usia dini bermain sambil belajar, belajar seraya bermain sehingga anak tidak sadar bahwa permainan yang mereka lakukan atau hal sederhana yang disampaikan orang tua kepada anak adalah pembelajaran matematika.]]>
<![CDATA[Potensi Antiinflamasi Ekstrak dan Fraksi n-Heksana Daun Galam (Melaleuca cajuputi) Asal Kalimantan Selatan ]]>
<![CDATA[Sutomo, Sutomo]]>;
<![CDATA[Arnida, Arnida]]>;
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Fadlilaturrahmah, Fadlilaturrahmah]]>;
<![CDATA[Fitriana, Mia]]>
<![CDATA[ BORNEO JOURNAL OF PHARMASCIENTECH Vol 9 No 2 (2025): Borneo Journal Of Pharmascientech ]]>
Publisher : <![CDATA[Universitas Borneo Lestari ]]>
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DOI: 10.59053/bjp.v9i2.754
<![CDATA[South Kalimantan has a unique topography that includes tidal areas and swamps, and peatlands. One of the natural resources that grows well in this area is the galam tree (Melaleuca cajuputi). Traditionally, this plant has been used to treat various inflammatory conditions, such as intestinal inflammation, sore throat, itchy skin, and rheumatism. M. cajuputi contains flavonoid compounds that are believed to have anti-inflammatory properties. This study aimed to determine the anti-inflammatory activity of ethanol extracts and n-hexane fractions of M. cajuputi leaves from South Kalimantan using a protein denaturation inhibition method with IC50 values as the parameter. Sodium diclofenac was used as the positive control in this study. The results of the anti-inflammatory activity test showed that the IC50 values for sodium diclofenac, ethanol extract, and n-hexane fraction of M. cajuputi leaves were 14.948; 51.577; and 61.700 ppm, respectively. Statistical analysis revealed a significant difference between the IC50 value of sodium diclofenac and those of the ethanol extract and n-hexane fraction. Based on the study conducted, it can be concluded that the ethanol extract and n-hexane fraction have anti-inflammatory activity, although their potency is lower than that of sodium diclofenac]]>
<![CDATA[Early numeracy skills in early childhood: the effect of numbered heads together cooperative learning methods ]]>
<![CDATA[Warmansyah, Jhoni]]>;
<![CDATA[Sabri, Ahmad]]>;
<![CDATA[Nasution, Maifatma]]>;
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Safna, Aisyah]]>;
<![CDATA[Fitri, Amelia]]>
<![CDATA[ Electronic Journal of Education, Social Economics and Technology Vol 3, No 2 (2022) ]]>
Publisher : <![CDATA[SAINTIS Publishing ]]>
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DOI: 10.33122/ejeset.v3i2.76
<![CDATA[This study aims to determine the effect of the cooperative learning method with the Numbered Heads Together type on numeracy skills in early childhood. This study used the pre-experimental method with a one group pretest-posttest design. The research sample for children aged 5-6 years was 16 children. Data collection was in the form of a checklist of child development data with value categories from not yet developed to very well developed. Data analysis used the t-test by fulfilling normality and homogeneity first. The results showed that the t-count value is greater than the t-table value (t-count t-table). So, it can be concluded that the cooperative learning method with the Numbered Heads Together type has an influence on the development of early childhood numeracy skills. Thus, the teacher can apply various types of cooperative learning methods in the classroom to improve other aspects of development.]]>
<![CDATA[Dynamics of Smartphone Addiction Among Young Children in Padang, Indonesia ]]>
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Samat, N.A.]]>;
<![CDATA[Warmansyah, Jhoni]]>
<![CDATA[ Indonesian Journal of Early Childhood Educational Research (IJECER) Vol. 4 No. 1 (2025) ]]>
Publisher : <![CDATA[Universitas Islam negeri Mahmud Yunus Batusangkar ]]>
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DOI: 10.31958/ijecer.v4i1.16106
<![CDATA[The increasing use of smartphones among early childhood populations has raised concerns regarding its impact on children’s development and behavior. Therefore, this study analyzes the dynamics of smartphone addiction among young children in Padang City, Indonesia, using the CSAR (Children–Susceptible–Addicted–Recovered) model. Population data and smartphone usage statistics from 2021 to 2024 were incorporated into the modeling process, while parameter estimation was conducted using a genetic algorithm with six mutation-rate variations. The best estimation result produced an error rate of 3.3646%, indicating a strong agreement between the model and empirical data. The basic reproduction number (R₀) of 0.6156 places the system in the moderate category. This suggests that although the spread of smartphone addiction among young children in Padang City is currently under control and not self-sustaining, continuous monitoring and strengthened preventive measures remain necessary to anticipate potential increases in future cases. Sensitivity analysis reveals that the transmission of addictive behavior through social interaction is the most influential factor affecting changes in R₀. These findings highlight the importance of managing peer-group interactions, such as limiting shared digital activities and strengthening collaborative non-digital play, as effective preventive strategies. Numerical simulations further support these results by demonstrating the system’s tendency toward an addiction-free equilibrium. Overall, this study provides a solid theoretical and empirical foundation for policy formulation and future research on early childhood digital behavior.]]>
<![CDATA[DEVELOPMENT OF A MATHEMATICAL MODEL FOR SMARTPHONE ADDICTION USING A DETERMINISTIC COMPARTMENTAL APPROACH ]]>
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Samat, Nor Azah]]>;
<![CDATA[Sabri, Ahmad]]>
<![CDATA[ BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 20 No 2 (2026): BAREKENG: Journal of Mathematics and Its Application ]]>
Publisher : <![CDATA[PATTIMURA UNIVERSITY ]]>
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DOI: 10.30598/barekengvol20iss2pp1359-1372
<![CDATA[Smartphone usage is increasing with technological advancements. However, excessive use can lead to addiction, negatively impacting an individual’s physical health, mental well-being, communication skills, and cognitive development. While previous studies have discussed the psychological and social aspects of smartphone addiction, there is still a lack of mathematical models that capture its spread at the population level. To address this gap, this study develops a deterministic compartmental model to describe the dynamics of smartphone addiction, representing real-world addiction scenarios through mathematical analysis. The novelty of this study lies in formulating a theoretical framework that identifies equilibrium points, conducts sensitivity analysis for each parameter, and employs numerical simulations to demonstrate the role of transmission rate and initial conditions in shaping addiction dynamics. The findings highlight that both transmission rate and initial conditions significantly influence the persistence of addiction, underscoring the importance of early interventions to reduce its long-term impact on the population.]]>
<![CDATA[The Use of an Open-Ended Learning Approach on The Ability To Recognize The Concept of Numbers: Its Effectiveness for Children 4-5 Years Old ]]>
<![CDATA[Warmansyah, Jhoni]]>;
<![CDATA[Azizah, Faiha]]>;
<![CDATA[Yuningsih, Restu]]>;
<![CDATA[Sari, Meliana]]>;
<![CDATA[Nurhasanah, Nurhasanah]]>;
<![CDATA[Amalina, Amalina]]>;
<![CDATA[Utami, Winda Trimelia]]>
<![CDATA[ Jurnal Pendidikan Anak Vol 5 No 2 (2023): Child Education Journal: August ]]>
Publisher : <![CDATA[Universitas Nahdlatul Ulama Surabaya ]]>
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DOI: 10.33086/cej.v5i2.4225
<![CDATA[The formation of numerical concepts is a critical stage in early childhood development. Understandingnumbers lays the groundwork for future mathematical abilities and academic success. This study aimsto investigate the effect of an open-ended learning strategy on the capacity of 4-5-year-old childrento recognize number concepts. To reach the research goal, a quantitative approach was used, alongwith experimental methodologies. The study participants were children aged 4-5 years old, and datawas collected via total sampling. The experimental group was taught using an open-ended learningtechnique, while the control group followed a traditional structured teaching method. Pre-and post-testswere used to examine the children’s ability to recognize number concepts. Statistical analysis, includingt-tests, was used to compare the performance of the experimental and control groups. The results of thisstudy show that using an open-ended learning strategy improves the capacity of 4-5-year-old children torecognize number concepts. In comparison to traditional structured teaching method, the open-endedapproach stimulates active inquiry, independent thinking, and problem-solving, which improves children’scognitive development with regard to numerical concepts. This study suggests that open-ended learningtechniques are excellent educational strategies for developing number concept identification in youngchildren. This study’s findings have ramifications for early childhood educators and curriculum makers.This study stresses the necessity of implementing such tactics in educational settings by demonstratingthe benefits of an open-ended learning strategy in developing number concept awareness. Open-endedlearning techniques can improve children’s mathematics ability while also contributing to their generalcognitive development. Furthermore, these findings may motivate additional study and inquiry into theuse of open-ended learning approaches in various domains of early childhood education, increasing ourunderstanding of successful teaching strategies for young children. ]]>
