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Investigasi Kemampuan Berpikir Aljabar Siswa dalam Pemecahan Masalah Matematika Thoyyibah, Rifqoh; Susanti, Elly
Jurnal Analisa Vol. 10 No. 1 (2024): Volume 10 Nomor 1 Tahun 2024
Publisher : Department of Mathematics Education, UIN Sunan Gunung Djati Bandung, West Java, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ja.v10i1.30022

Abstract

Siswa harus belajar untuk berpikir secara aljabar karena berpikir aljabar menjadi bagian dari beberapa cara berpikir dalam pembelajaran matematika. Berpikir aljabar erat juga kaitannya dengan membuat pola generalisasi. Berpikir aljabar merupakan berpikir yang menyatakan keterkaitannya ke dalam hubungan umum, lalu membandingkan dan memanipulasinya. Oleh karena itu, penting bagi peserta didik untuk mengasah kemampuan berpikir aljabar. Namun faktanya kemampuan berpikir alajabar peserta didik masih rendah. Tujuan penelitian ini untuk melakukan investigasi terhadap kemampuan berpikir alajar peserta didik dalam menyelesaikan masalah matematika. Pendekatan yang digunakan adalah penelitian deskriptif kualitatif. Instrumen dalam penelitian ini yaitu satu soal cerita materi aljabar dan pedoman wawancara. Uji keabsahan data menggunakan validitas internal (credibility) dalam bentuk triangulasi teknik. Hasil penelitian ini menunjukkan bahwa peserta didik dengan kemampuan matematika yang baik juga memiliki kemampuan berpikir aljabar yang baik karena peserta didik mampu memenuhi semua indikator yaitu genarsional, transformasi, dan level meta global dengan tepat. Peserta didik dengan kemampuan matematika sedang hanya mampu memenuhi indikator transformasi, dan level meta global, namun dengan jawaban tidak tepat. Peserta didik dengan kemampuan matematika rendah memenuhi indikator transformasi, dan level meta global, namun dengan jawaban tidak tepat. Students must learn to think algebraically because algebraic thinking is part of several ways of thinking in learning mathematics. Algebraic thinking is also closely related to making generalization patterns. Algebraic thinking is thinking that expresses connections into general relationships, then compares and manipulates them. Therefore, it is important for students to hone algebraic thinking skills. However, the fact is that students' algebraic thinking abilities are still low. The aim of this research is to investigate students' natural thinking abilities in solving mathematical problems. The approach used is qualitative descriptive research. The instruments in this research were one algebra story question and an interview guide. Data validity testing uses internal validity (credibility) in the form of technical triangulation. The results of this research show that students with good mathematical skills also have good algebraic thinking skills because students are able to fulfill all indicators, namely genarsional, transformational, and global meta levels correctly. Students with moderate mathematical abilities are only able to fulfill the transformation indicators and global meta level, but with incorrect answers. Students with low mathematical abilities meet the transformation indicators and global meta level, but with incorrect answers.
FAKTOR FAKTOR YANG MEMPENGARUHI KEBIJAKAN HUTANG DENGAN LIKUIDITAS SEBAGAI VARIABEL MODERATING Susanti, Elly; Putri, Juan Anastasia; Sembiring, Lenny Dermawan; Sianipar, Ruth Tridianty; Azwar, Khairul
Jesya (Jurnal Ekonomi dan Ekonomi Syariah) Vol 7 No 2 (2024): Artikel Periode Research Juli 2024
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi Al-Washliyah Sibolga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36778/jesya.v7i2.1679

Abstract

Tujuan dari penelitian ini adalah mengetahui dan menganalisis pengaruh Struktur Aset, Profitabilitas dan ukuran perusahaan terhadap kebijakan hutang serta untuk mengetahui dan menganalisis apakah Likuiditas mampu memperkuat/memperlemah pengaruh Struktur Aset, Profitabilitas dan ukuran perusahaan terhadap kebijakan hutang. Objek dalam penelitian ini adalah perusahaan yang terdaftar di Jakarta Islamic Index periode 2020 – 2023. Jumlah populasi sebanyak 48 perusahaan dan untuk purposive sampling sehingga sampel dalam penelitian adalah 13 perusahaan. Teknik Analisis data yang dilakukan adalah analisis statistik deskriptif, uji asumsi klasik, uji hipotesis dan metode interaksi menggunakan software SPSS 21. Hasil penelitian menunjukkan bahwa secara simultan Struktur Aset, Profitabilitas dan Ukuran Perusahaan berpengaruh signifikan terhadap Kebijakan Hutang. Sedangkan secara parsial Ukuran Perusahaan pengaruh positif dan tidak signifikan terhadap Kebijakan Hutang, Struktur Aset, Profitabilitas dan Interaksi 3 (SIZE* CR) pengaruh positif dan signifikan terhadap Kebijakan Hutang selanjutnya Interaksi 1 (TAR*CR) dan Interaksi 2 (ROA * CR) pengaruh negatif dan signifikan terhadap Kebijakan Hutang
Innovation in Adding Moringa Leaf Puree (Moringa Oleifera) in the Making of Roti Jala Susanti, Elly; Afriani, Miratia; Amalia, Eva; Saputra , Eryd
Journal Research of Social Science, Economics, and Management Vol. 5 No. 3 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v5i3.1133

Abstract

Concerns over the adverse effects of using synthetic dyes in food products—such as the risk of allergies and long-term health issues—have prompted the need for safer and more nutritious natural dye alternatives. This research aims to explore the innovation in adding Moringa Leaf Puree (Moringa Oleifera) in the making of Roti Jala as an effort to present traditional foods that are healthier and more functional. The research employed an experimental approach with three treatments, namely the addition of Moringa leaf puree at levels of 25%, 50%, and 75% of the total wheat flour. The results showed that the 25% Moringa leaf treatment was the most preferred formulation among the panelists, achieving an overall preference rate of 81%, especially in terms of color, texture, and taste. The ANOVA test indicated significant differences in color, aroma, and taste, but not in texture. Macronutrient content analysis revealed an increase in energy, protein, and fat corresponding with the higher addition of Moringa leaf puree, where the 75% sample yielded 872.2 kcal of energy, 210.7 g of protein, and 179.2 g of fat per 200 grams serving. This study demonstrates that Moringa leaf puree can serve as a natural coloring agent while enhancing nutritional value without diminishing the typical characteristics of Roti Jala. These findings are expected to contribute to the development of traditional culinary innovations that are healthy, economically valuable, and supportive of sustainable food product advancement.
The Arithmetic Sequences in Making Traditional Cast Nets in Lombok Akbar, Lalu Ajimuliardi; Alghar, Muhammad Zia; Marhayati, Marhayati; Susanti, Elly
Edumatika Vol 6 No 1 (2023): May 2023, Edumatika : Jurnal Riset Pendidikan Matematika
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan IAIN Kerinci

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32939/ejrpm.v6i1.2541

Abstract

Mathematical concepts can be found in the culture of the community, such as in daily activities and handicrafts. One type of handicraft is the pencar, a cast net (throw net) fishermen use to catch fish. This research aims to explore the arithmetic sequences involved in making a pencar. This research uses qualitative research with ethnography. The research was conducted in Marong Village, West Nusa Tenggara, Indonesia. Data were obtained by direct observation of the pencar and the process of making it, interviews with cast-net handycrafters, and literature studies on arithmetic sequences. The results of this study show that there are three arithmetic sequences in the pencar. The first sequence, the number of anak (meshes) between each anakan (widener) in the n-th widener row, is 3, 4, 5, and so on, formulated by Un = 3 + (n - 1). The second sequence, the number of anakan (widener) in the n-th widener row is 44, 45, 46, and so on, formulated by Un = 44 + (n - 1). The third sequence, the number of lubang (meshes) in the n-th anakan is 44, 90, 138, 188, and so on, formulated by Un = n^2 + 43n. The arithmetic sequences in pencar can be used as a problem context for culture-based learning in the arithmetic sequence topic.
Orange Roll Jelly Processing Training as a business opportunity in Tegalweru Village, Malang Regency Magfiroh, Norma Hasanatul Magfiroh; Susanti, Elly
Journal of Community Engagement Vol. 01 No. 01 (2025)
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/jce.vi.74

Abstract

Tegalweru Village is one of the citrus producing centers in Malang Regency, but has no innovation in processing crops that have an impact on community economic empowerment. This study aims to assess the effectiveness of orange roll jelly processing training as a form of business opportunity based on local potential. The research method used is descriptive qualitative, with data collection techniques through observation, interviews, documentation, and community empowerment. The training, which was held on January 19, 2023, was attended by 30 PKK mothers. The results showed an increase in participants' understanding of the manufacturing process and the business potential of the product. Orange roll jelly products are considered attractive, healthy because they are without preservatives, and have economic value. This training opens up opportunities for the formation of new MSMEs based on local potential and strengthens the empowerment of village women.
Analysis Of Idx 30 Stock Portfolio Performance During Covid 19 Pandemic Anastasia Putri, Juan; Susanti, Elly; Tridianty Sianipar, Ruth
International Journal of Science, Technology & Management Vol. 3 No. 6 (2022): November 2022
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v3i6.689

Abstract

Investors need to do proper analysis before making a decision in investing. If the investor does not do the right analysis, the investor will experience significant losses. One of the analyzes used is CAPM, and for the next step the researcher evaluates the performance of the stock portfolio. This study aims to analyze the performance evaluation of stock portfolios during the covid 19 pandemic. The research objects were companies registered in IDX 30 during the period January 2020 to July 2022. The result of this study is the Treynor index is the most indicative of conformity without differences between the three measures, as Treynor. Its value is similar to Sharpe and the Jensen index has the smallest difference.
Effect Of Inflation, Exchange Rates, And Trading Volume Activity On Stock Price Indices During The Covid-19 Pandemic On Companies In The Basic Industry And Chemical Sectors Ervina, Nelly; Azwar, Khairul; Susanti, Elly; Dewi Nainggolan, Christine
International Journal of Science, Technology & Management Vol. 3 No. 6 (2022): November 2022
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v3i6.693

Abstract

Covid-19 has an impact on the economy, where ADB decreased with estimates in Asian Developing Countries by 3.0 ppts to 2.2%, and for ASEAN by 3.7 ppts to 1.0% (ASEAN, 2020). In addition, one of the indicators that shows that the occurrence of stock market movements, can be seen through the country's stock price index. The Composite Stock Price Index (JCI), which is one of the benchmarks for the Indonesian stock market, on March 5, 2020 was at 5,638.13 and experienced a low on March 24, 2020 at 3,937.63. This study aims to determine the effect of inflation, exchange rate, and TVA on the stock price index in the basic and chemical industry sectors, which in this case uses data in the period January 2020 -June 2022, namely the period where the stock price index of the basic industry and chemical sectors shows a downward trend in April 2020 and November 2020. The sampling technique used in this study was purposive sampling samples so that 64 Companies in the Basic and Chemical Industries Sector were obtained listed on the IDX. The data analysis technique used in this study uses descriptive statistical analysis to describe the data that has been collected. The results of the study for the F test showed that inflation, exchange rates and TVA had a positive and significant effect on the stock price index. While the results of the t-test show that inflation has a positive and insignificant effect, the exchange rate has a positive and significant effect on the stock price index, and TVA has a negative and insignificant effect on the stock price index.
Teaching the Rule of Product using Nature Tourism Routes Putra, Aan; Zulkardi, Zulkardi; Putri, Ratu Ilma Indra; Laswadi, Laswadi; Susanti, Elly; Nusantara, Duano Sapta
Tarbawi : Jurnal Ilmu Pendidikan Vol. 19 No. 2 (2023): Tarbawi : Jurnal Ilmu Pendidikan
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan Institut Agama Islam Negeri Kerinci

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32939/tarbawi.v19i2.3168

Abstract

A tourism route is a sequence of tourist attractions visited. Students are familiar with tour activities and often plan tourism routes to visit several tourist attractions. Students' experience and knowledge about tourism routes can be used as a context for teaching the rule of product. Therefore, this research aims to design a learning trajectory for the rule of product using the Indonesian Realistic Mathematics Education (PMRI) approach in the Kerinci nature tourism route context. The research method used is design research with a validation study type, which consists of three stages: preparation and design, teaching experiment, and retrospective analysis. The subjects involved in this research were 11 third-semester mathematics education students at a university in Jambi, Indonesia. The instruments include learning video recordings, student work results, field notes, and test sheets. The research results show that learning trajectories designed in the context of tourism routes can help students discover, understand, and use the rule of product in solving relevant mathematical problems. The learning tracjectory consists of four activities: making a list of Kerinci tourist attractions, determining the location of several tourist attractions on a sketch map, arranging tourist attractions in tourism routes, and solving problems regarding possible tourism routes. This research shows that the designed learning trajectory is vital in helping students discover and understand the rule of product and apply them to solving relevant problems.
Implementasi Roadshow Galeri Investasi dalam Meningkatkan Literasi Keuangan Siswa SMA Swasta Diponegoro Kisaran Sherly, Sherly; Susanti, Elly; Chandra, Erbin; Indajang, Kevin; Putri, Juan Anastasia
Reswara: Jurnal Pengabdian Kepada Masyarakat Vol 7, No 1 (2026)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v7i1.7822

Abstract

Kegiatan pengabdian kepada masyarakat ini dilaksanakan di SMA Swasta Diponegoro Kisaran, Kabupaten Asahan, sebagai respons terhadap rendahnya literasi keuangan, terbatasnya pemahaman siswa mengenai investasi, serta tingginya kerentanan Generasi Z terhadap praktik investasi ilegal yang marak melalui media sosial. Kegiatan ini bertujuan untuk meningkatkan pemahaman pasar modal bagi siswa kelas XI dan XII melalui program Roadshow Galeri Investasi yang diselenggarakan oleh Kelompok Studi Pasar Modal (KSPM) STIE Sultan Agung bekerja sama dengan Bursa Efek Indonesia. Metode pelaksanaan kegiatan dilakukan melalui pendekatan edukatif dan partisipatif, yang meliputi beberapa tahapan, yaitu: (1) penyampaian materi mengenai literasi keuangan, pasar modal, dan pengenalan instrumen investasi; (2) diskusi interaktif dan sesi tanya jawab untuk menggali pemahaman serta persepsi siswa terhadap investasi; dan (3) simulasi perdagangan saham (trading simulation) sebagai bentuk pembelajaran praktis. Untuk mengukur efektivitas kegiatan, digunakan instrumen pretest dan posttest secara sederhana sebagai alat evaluasi pemahaman peserta sebelum dan sesudah kegiatan berlangsung. Hasil pelaksanaan kegiatan menunjukkan adanya peningkatan pemahaman siswa terhadap konsep investasi dan instrumen pasar modal. Tingkat partisipasi dan antusiasme peserta mencapai 93%, yang tercermin dari keterlibatan aktif siswa dalam diskusi, simulasi trading, serta sesi tanya jawab. Temuan ini menunjukkan bahwa edukasi pasar modal yang dilakukan secara langsung dan aplikatif efektif dalam meningkatkan literasi keuangan siswa sejak dini, sehingga diharapkan mampu membentuk perilaku calon investor yang lebih rasional serta mendukung penguatan inklusi keuangan di kalangan generasi muda
PENGUATAN KETAHANAN PANGAN DAN EKONOMI KELUARGA MELALUI PRODUKSI PUPUK HAYATI MIKORIZA DI DESA BLANG KRUENG, KABUPATEN ACEH BESAR Fikrinda, Fikrinda; Syafruddin, Syafruddin; Susanti, Elly
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 9, No 1 (2026): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v9i1.64741

Abstract

Food security and family economic resilience are strategic issues in rural communities, particularly in the face of vulnerable socio-economic dynamics. A promising strategy to address these challenges involves the adoption of mycorrhiza-based biofertilizer technology, which is both environmentally sustainable and economically beneficial. This community service program aimed to empower farmer groups and housewives in Blang Krueng Village, Aceh Besar District, to independently produce and utilize mycorrhiza-based biofertilizers for seasonal vegetable cultivation as an effort to enhance food security and household income. Activities were carried out through counseling sessions, technical training on mycorrhizal propagation using pot culture with maize as the host plant, and field demonstrations on various vegetable crops. Conducted during the COVID-19 pandemic, the program highlighted the urgency of applying localized technologies to address household food and income vulnerabilities. The results showed a 75% increase in participants' knowledge, the production of 500–1000 kg of mycorrhizal inoculum per cycle, improved harvest quality, and a 30% average increase in selling prices. This program also supported economic independence through the marketing of biofertilizers and agricultural products. The empowerment model demonstrated here has the potential to be replicated in other communities to strengthen food security through eco-friendly technological innovation.Ketahanan pangan dan penguatan ekonomi keluarga merupakan isu strategis di tingkat pedesaan, terutama karena masyarakat menghadapi dinamika sosial-ekonomi yang rentan dan tidak menentu. Salah satu pendekatan yang dapat diterapkan untuk menjawab tantangan tersebut adalah pemanfaatan teknologi pupuk hayati berbasis mikoriza yang ramah lingkungan dan bernilai ekonomi. Program pengabdian ini bertujuan memberdayakan kelompok tani dan ibu rumah tangga di Desa Blang Krueng, Kabupaten Aceh Besar, dalam memproduksi dan memanfaatkan pupuk hayati berbasis mikoriza untuk budidaya sayuran semusim sebagai upaya peningkatan ketahanan pangan dan ekonomi keluarga. Kegiatan dilaksanakan melalui penyuluhan, pelatihan teknik perbanyakan mikoriza menggunakan pot kultur dengan jagung sebagai tanaman inang, serta demonstrasi aplikasinya pada berbagai jenis tanaman sayuran semusim. Program ini dilaksanakan pada masa pandemi Covid-19, yang  memperkuat urgensi intervensi berbasis teknologi lokal untuk mengatasi kerentanan pangan dan pendapatan rumah tangga. Hasil kegiatan menunjukkan peningkatan pengetahuan peserta sebesar 75%, produksi inokulum mikoriza mencapai 500–1000 kg per periode dengan kualitas panen yang lebih baik dan harga jual meningkat rata-rata 30%. Kegiatan ini juga mendorong kemandirian ekonomi keluarga melalui pemanfaatan pupuk hayati dan pemasaran hasil panen. Model pemberdayaan ini berpotensi direplikasi untuk memperkuat ketahanan pangan berbasis teknologi ramah lingkungan di komunitas lain.
Co-Authors Aan Putra Abd. Rasyid Syamsuri Afriani, Miratia Agung Prastio Agus Nugroho Agussabti Agussabti Agussabti Agussabti Agussabti Agussabti Agussabti Agusssabti Agustina Arida Ahmad Humam Hamid Akbar, Lalu Ajimuliardi Akhmad Baihaqi Alfaridzi, Tegar Alfatin Samay Alghar, Muhammad Zia Amirul Fuadi Andy Wijaya Angga Dwi Mulyanto Ani Muharni Astuti Astuti - Aurum Sahlida Ayulia Yunara Azra Algifari Bahasa Indonesia, Bahasa Indonesia Budi Darma Butarbutar, Novita Candra, Vivi Christine D. Nainggolan Cut Anly Tritama Damanik, Nuraini Yunita Damanik, Zuhari Dani Ansari Darusman Darusman Darwin Lie Debi Eka Putri Dewi Nainggolan, Christine Dinaroe Dinaroe Diswandi Nurba, Diswandi Duano Sapta Nusantara Dwi Suheriyanto Edi Saputra EFENDI Efendi Efendi Effendi, Helwin Elvira Iskandar Erbin Chandra Ernest Grace Eryd Saputra Eva Amalia F Silaen, Musa fendiyanto, fendiyanto Fikrinda Fikrinda Furqan Nazir Huda, Nur Fuad Kholiqul Ilham Syahputra Indra Indra Indra Indra Indra Indra Ira Manyamsari Irdavani, Ananta Irfan Zikri Jannah, Akyunnul Juan Anastasia Putri Jubi, Jubi Julyantri, Julyantri Kamaruzzaman, Suraiya Kevin Indajang Khairul Anwar Khairul Azwar Kiki Andriyan Lailaturrosidah, Azah Lailiyah, Munirotul Lase, Agustian Zisokhi Laswadi Laswadi Lenny Dermawan Sembiring Luh Putu Ratna Sundari Lukman Hakim M. Aflah Fauzan Siregar Magfiroh, Norma Hasanatul Magfiroh Maghfiroh, Jamilatul Maqfirah Van Tawarniate Marhayati Marto Silalahi Mira Chazinatuddini Muhammad Akram Muhammad Akram muhammad rizki aulia Muji Burrahmad Mujiburrahmad Mujiburrahmad Muliadi Muliadi Musa Fernando Silaen Mustafa Usman Mutiara Arlisyah Putri Utami Nafisatul Qur'ani, Fauziyah Nainggolan, Pinondang Naufal Mutawakkil Nelly Ervina Peggi Epaga Purba, Olimvia Agus Santi Purba, Rosanna Putri, Risty Angelia Qur'ani, Fauziyah Nafisatul Raida Agustina Ratu Ilma Indra Putri Risty Angelia Putri Robert Tua Siregar Romano Romano Ruth Tridianty Sianipar Safrida Safrida Safrida sherly sherly Siahaan, Yansen Sianipar, Lasmaria Ulan Sari Silaban, Lisda Silitonga, Hery Pandapotan Silvia Zahara Siregar, Kholizah Aryati Siregar, Liper sisca Sofyan Sofyan Sofyan Sri Harini Suci Lestari Suci, Indah Tri Suherman Suherman Supiarmo, M. Gunawan Supitriyani, Supitriyani Suraiya Kamaruzzaman Suyanti Kasimin Syafruddin Syafruddin Syakur Syakur T. Makmur Tarigan, Parman Tarranita Kusumadewi Tasyarah Tasyarah Taufan Hidayat Teuku Adian Makmur Rizqullah Thoyyibah, Rifqoh Tribhuana, Chilvia Turmudi Ulfa Mifthahurrahmah Usman Pagalay Utami, Denok Andri Waliyatul Hamimiy Wirananda, Henny Andriyani Zaitun Zaitun Zikri, Irfan Zulkardi Zulkardi Zulwanis, Zulwanis Zuyasna Zuyasna