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All Journal Jurnal Pengajaran MIPA SIGMA: Jurnal Pendidikan Matematika AKSIOMA Edcomtech Jurnal Kajian Teknologi Pendidikan ALGORITMA : Journal of Mathematics Education JPMI (Jurnal Pembelajaran Matematika Inovatif) ETNIK : Jurnal Ekonomi dan Teknik Humantech : Jurnal Ilmiah Multidisiplin Indonesia Jurnal Riset Pendidikan Matematika Jakarta Jurnal Indonesia Sosial Sains
Kustiawati, Dedek
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ANALISIS KEMAMPUAN LITERASI SPASIAL SISWA PADA MATERI TRANSFORMASI GEOMETRI Kustiawati, Dedek; Azzahra, Zetta; Satriawati, Gusni
ALGORITMA: Journal of Mathematics Education Vol. 5 No. 2 (2023): ALGORITMA Journal of Mathematics Education
Publisher : Faculty of Educational sciences, UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/ajme.v5i2.36435

Abstract

AbstractThis study aims to determine the overall level of students' spatial literacy skills and analyse and describe each spatial literacy indicator on geometry transformation material. The type of research used is a quantitative approach with descriptive methods. This study used a sample of 100 students of class XII MIPA. The instrument used consists of a written test in the form of descriptive questions totalling 9 questions to measure students' spatial literacy skills. The research results obtained show that: 1) students' spatial literacy skills are classified in the medium category, but the average score is still far below the KKM score. 2) Judging from the visualisation aspect, the average acquisition of this indicator is better than the other indicators, namely 49.33, where some students have been able to sketch spatial objects through visual images based on contextual problems appropriately and completely. 3) Judging from the reasoning aspect with an average of 26.83, most students still do not understand the concept of geometric transformation well, so they cannot relate concepts and relationships of spatial objects and use both in calculations.  4) Judging from the communication aspect with an average of 30.92, there are still many students who are unable to express their ideas related to the relationship of spatial objects correctly. It can be concluded that the spatial literacy skills possessed by students are not yet qualified.     AbstrakPenelitian ini bertujuan untuk mengetahui tingkat kemampuan literasi spasial siswa secara keseluruhan dan menganalisis serta mendeskripsikan setiap indikator literasi spasial pada materi transformasi geometri. Jenis penelitian yang digunakan adalah pendekatan kuantitatif dengan metode deskriptif. Penelitian ini menggunakan sampel sebanyak 100 siswa kelas XII MIPA. Instrumen yang digunakan terdiri atas tes tertulis berbentuk soal uraian yang berjumlah 9 soal untuk mengukur kemampuan literasi spasial siswa. Hasil penelitian yang diperoleh menunjukkan bahwa: 1) Kemampuan literasi spasial siswa tergolong dalam kategori sedang, namun nilai rata-ratanya masih berada jauh di bawah nilai KKM. 2) Dilihat dari aspek visualisasi, perolehan rata-rata indikator ini lebih baik dibandingkan dengan indikator yang lain yaitu 49,33, dimana sebagian siswa sudah mampu membuat sketsa objek spasial melalui gambar visual berdasarkan masalah kontekstual dengan tepat dan lengkap. 3) Dilihat dari aspek penalaran dengan perolehan rata-rata 26,83, sebagian besar siswa masih belum memahami konsep transformasi geometri dengan baik, sehingga tidak dapat mengaitkan konsep dan hubungan objek spasial dan menggunakan keduanya dalam perhitungan. 4) Dilihat dari aspek komunikasidengan perolehan rata-rata 30,92, masih banyak siswa yang tidak mampu mengemukakan idenya terkait dengan hubungan objek spasial dengan benar. Hal ini dapat disimpulkan bahwa kemampuan literasi spasial yang dimiliki oleh siswa belum mumpuni.
Biaya Marginal dalam Penerapan Matematika Ekonomi Afiyanti, Yunita; Ridhoilahi, Iftitah; Nur Azizah, Fajrina; Mardyah Nur Afifah, Ainul; Kustiawati, Dedek
Jurnal Etnik: Ekonomi-Teknik Vol 1 No 12 (2022): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v1i12.131

Abstract

In general, when building a business or business, the main goal is to get the maximum profit. However, besides that, it also uses capital, sacrifices the smallest possible production costs while maintaining the survival and development of the business. Therefore  it is necessary to have a good and structured work plan so that the desired goals can be achieved effectively and efficiently without causing high risks. This study aims to determine the marginal cost as an application of economic mathematics using the literature study method. In this method, researchers examine books and journals related to marginal costs in economic mathematics. The marginal cost of the application of the limit function, the marginal cost is the change in total cost (Q) that occurs due to an increase in production of 1 unit or item. The result of this study is that the limit concept is useful in economics regarding change and the instantaneous rate of change can be used to determine marginal cost. The concept of the marginal is paying attention to the total value or quantity associated with very small changes in the variables that affect it. Marginal cost is the rate of change of total cost due to the addition of one unit of production of goods.
Analisis Pendapatan Nasional: Kota Jakarta Kustiawati, Dedek; Anisa, Anisa; Afiyah Utami, Ersita; Khoirunnisa, Najmina
Jurnal Etnik: Ekonomi-Teknik Vol 2 No 1 (2023): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v2i1.141

Abstract

This paper aims s to determine the gross national income and economic growth in the capital, namely the city of Jakarta. This study uses a quantitative approach. This study also identifies the impact of the corona virus that has occurred for two years on the gross national income of the City of Jakarta. The results of the study show that the gross national income of the City of Jakarta has grown quite significantly from year to year. Despite the Corona outbreak and with the increase in the census of the poor and the population of the City of Jakarta, this is not a barrier to increasing the amount of the Regional Budget for the City of Jakarta. Regional revenues for the City of Jakarta have grown significantly from year to year. Pemprov DKI Jakarta must continue to work hard to stabilize and further improve the safety level of the City of Jakarta PPE for the remainder of the year while continuing to consider what, if anything, has the potential to undermine this upward trend. Therefore, accelerating PPE in Jakarta will have a negative impact on economic growth and the local population's sense of security.
Mekanisme Pasar untuk Mencapai Keseimbangan Pasar Dalam Sistem Ekonomi Islam Adelia, Della; Kustiawati, Dedek; Musyarrofah, Ani; Bina Hakim, Indira
Jurnal Etnik: Ekonomi-Teknik Vol 2 No 1 (2023): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v2i1.142

Abstract

A country's economic activity is very dependent on the role of the market, even though injustice and fraud often occur in its trading activities, especially in determining the price offered. Therefore a rule is needed regarding market price determination, where the rule is known as a market mechanism, namely price setting based on demand and supply. The market is where the process of demand and supply occurs until the equilibrium price is reached. This research is a literature research or library reasearch that examines information through books, documents, articles, and other literature media that can be used as a source in preparing a study. This study aims to determine the role of market mechanisms to create market balance in the view of Islamic economics. The results showed that Islam puts the market in an important position in the economy of the market mechanism in accordance with sharia does not promote government intervention in normal market conditions. However, when the market is distorted, it takes the role of the government in overcoming problems to realize the benefits of the people
Keseimbangan Pasar dan Peran Negara Dalam Sistem Ekonomi Islam Menurut Alquran dan Hadits Malik Akbar, Nanang; Kustiawati, Dedek; Cilabanyu Vivi Hartono, Ning; Azzahra Sena, Luthfiana
Jurnal Etnik: Ekonomi-Teknik Vol 2 No 1 (2023): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v2i1.144

Abstract

Market equilibrium is a price agreement that occurs in a market system between sellers and buyers with a mechanism of bargaining. The presence of demand and supply encourages a bargaining process aimed at obtaining a balanced price. The market can be said to get a price balance when the asking price matches the bid price. The process of demand and supply is also in the perspective of Islamic economics. The research method used in this research is library research or literature research. The results of the study show that in Islamic economics there are conditions related to the Al-Qur'an and Hadith, namely the concept of a good economy and in accordance with Islamic teachings. The view of Islamic teachings regarding market balance is relatively the same but has certain limitations with the aim of fulfilling Islamic principles.
Implementasi Integral dalam Bidang Ekonomi di Indonesia Ramadhanty, Desfi; Kustiawati, Dedek; Fakhrezi, Ficky; Rizki Dalimunte, Mutiara
Jurnal Etnik: Ekonomi-Teknik Vol 2 No 1 (2023): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v2i1.146

Abstract

The implementation of integral in the field of economics in Indonesia plays a very important role in helping the government and companies make the right and wise decisions. By using integral methods, the government and companies can determine the point of production efficiency, estimate the optimal production level, and determine the total cost needed to reach that production level. The method used in this study is a literature review. A literature review is one of the research methods that relies on existing documents. Cost is the amount of money a company spends on its production activities and is expressed as C or TC (Total Cost). The revenue function, also called the income or sales function, is represented by R or TR (Total Revenue). The utility function explains the level of satisfaction that consumers receive from a good or service. The production function describes the relationship between output and production factors. The producer's surplus is the difference between revenue and the minimum benefit received by the producer. Consumption is an economic action taken to meet needs using goods or services. The savings function shows the relationship between savings and income.
Analisis Anuitas Kredit Motor Honda Revo FI Fit Maudhunah Almunawaroh, Nurul; Kustiawati, Dedek; Fardania, Hilda; Melinda Sulton, Nindi
Jurnal Etnik: Ekonomi-Teknik Vol 1 No 12 (2022): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v1i12.151

Abstract

Along with the many needs of the community for their lives, especially in motorized vehicles, many financial institutions provide credit facilities to make it easier for people who want to own a motorbike in the near future but are constrained by costs. One of the institutions that provide a credit system is Honda. Honda has launched many kinds of products, one of which is Revo FI FIT. To attract buyers, Honda provides various installment offers with loan amounts and terms. The data used in this study is secondary data in the form of qualitative data by searching documents from the Honda Cengkareng website which was updated on November 30, 2022. In this study, we will analyze whether the installment calculation is in accordance with the annuity theory or not. Based on the results of data processing by calculating the theoretical formula of compound interest and ordinary annuities, it is found that the calculation of the motorcycle loan annuity is not in accordance with the ordinary annuity theory, where the installments using the ordinary annuity theory are smaller than the installments listed on the web.
Kenaikan Ekspor dan Impor Tahun 2022 Terhadap Pendapatan Nasional Indonesia Rima Pratiwi, Rosiati; Ramadhanti, Dita; Sholihah, Afifah; Kustiawati, Dedek
Jurnal Etnik: Ekonomi-Teknik Vol 2 No 2 (2023): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v2i2.154

Abstract

International trade is crucial for countries to fulfill their needs and boost their economies. The COVID-19 pandemic has affected domestic and international trade. Indonesia's economy remains relatively strong, with growth projections above global projections. National income is an important indicator for measuring a country's economic growth. There are three approaches to calculating national income: production, income, and expenditure. This study focuses on the expenditure approach. The purpose of this study is to examine the impact of the increase in exports and imports from October 2021-2022 on Indonesia's national income. The research was conducted by collecting and analyzing data from the Indonesian Central Bureau of Statistics (CBS), as well as utilizing library research methods. The findings suggest that changes in the value of exports and imports will affect national income, making them significant factors that impact a country's national income.
Proyeksi Pertumbuhan Penduduk Kecamatan Cibinong Dengan Metode Matematik Herlina, Nina; Kustiawati, Dedek; Liza Halimi, Denia; Mayang Sari, Andita
Jurnal Etnik: Ekonomi-Teknik Vol 2 No 2 (2023): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v2i2.157

Abstract

This study examines the growth model with mathematical methods used to obtain information or predict future population growth in Cibinong. In this study, researchers used data we obtained from the Central Bureau of Statistics (BPS) of West Java Province. Data were taken by researchers from the results of the 2010 – 2020 population census. The method used is a mathematical method consisting of arithmetic models, geometric models and exponential models. . Based on the results of the analysis, that large population growth is known by using the Exponential Model. Meanwhile, for the Geometry, Arithmetic model, it shows that population growth continues to occur in the Cibinong area, although it is very small.
Investasi ditinjau dari Perspektif Ekonomi dan Ekonomi Islam Putri Ramadhani, Azahra; Afifah Septyasari, Indah; Nur Hasannah, Fajriah; Kustiawati, Dedek
Jurnal Indonesia Sosial Sains Vol. 3 No. 12 (2022): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v3i12.746

Abstract

Investment is spending or spending to buy capital goods or equipment to increase the ability to produce goods or services. Many investments are made by the community in order to increase the value of the assets they have. Investment has many very useful benefits in the future. Investment really needs to be done so that economic development runs smoothly so that people feel prosperous. Even in Islam, investment is highly recommended. The method used in this research is the literature study method. Based on the research results that have been reviewed, there are two foundations for investing, namely the Qur'an and Hadith. Before making an investment, there are things that need to be considered, namely the terms or conditions that are permissible and prohibited in order to achieve benefits for oneself in this world and the hereafter. It can be concluded that before investing, investors must understand the concept of investment, investment principles, investment objectives, types of investment, the benefits of investing, even what risks are likely to occur when making an investment.
Co-Authors Abdul Muin Afifah Septyasari, Indah Afiyah Utami, Ersita Afiyanti, Yunita alhadi, Mauludin hafiz Ani, Fauziah Astika Fitri Anisa Anisa Atiqoh, Khamida Siti Nur Azzahra Sena, Luthfiana Azzahra, Zetta Bina Hakim, Indira Cilabanyu Vivi Hartono, Ning Della Adelia, Della Dindin Sobiruddin, Dindin Fakhrezi, Ficky Fardania, Hilda Fathinah, Shabihah Nur Gelar Dwirahayu Gusni Satriawati, Gusni Juli, Sofie Fauziyyah Khoirunnisa, Najmina Liza Halimi, Denia M. Hafiz Malik Akbar, Nanang Mardyah Nur Afifah, Ainul Maudhunah Almunawaroh, Nurul Mayang Sari, Andita Melinda Sulton, Nindi Musyarrofah, Ani Neneng Maulida Nina Herlina Nur Azizah, Fajrina Nur Hasannah, Fajriah Nurmala Nurmala Putri Ramadhani, Azahra Ramadhanti, Dita Ramadhanty, Desfi Ridhoilahi, Iftitah Rima Pratiwi, Rosiati Rizki Dalimunte, Mutiara Sari, Melati Puspita Sholihah, Afifah Sulistiono, Abrar Naufal Rasyid Tamiza, Tamiza