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PERBANDINGAN METODE DISKUSI DAN DEMONSTRASI TERHADAP HASIL BELAJAR MATEMATIKA SISWA POKOK BAHASAN BANGUN RUANG KELAS VIII MTs USB SAGULUNG BATAM TAHUN PELAJARAN 2013/2014 Dian Mayasari; Ismarti Ismarti
PYTHAGORAS : Jurnal Program Studi Pendidikan Matematika Vol 3, No 2 (2014): PYTHAGORAS: Jurnal Program Studi Pendidikan Matematika
Publisher : UNIVERSITAS RIAU KEPULAUAN, BATAM, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (171.809 KB) | DOI: 10.33373/pythagoras.v3i2.581

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ABSTRAK Penelitian ini bertujuan untuk mengetahui perbandingan hasil belajar matematika siswa yang pembelajarannya menggunakan metode diskusi dan demonstrasi di kelas VIII MTs USB Sagulung Batam tahun pelajaran 2013/2014. Jenis penelitian adalah penelitian komparatif.  Populasi dalam penelitian ini adalah seluruh siswa kelas VIII MTs USB Sagulung Batam yang berjumlah 4 kelas.  Pengambilan sampel dilakukan dengan teknik cluster random sampling.  Sampel dalam penelitian ini adalah kelas VIIIA dan VIIIB dengan total 62 siswa. Teknik analisis data yang digunakan adalah uji t.Dari analisis data dengan uji t pada taraf signifikansi α=0,05 dan dk = 60 diperoleh nilai thitung (2,914) ttabel (2,000) sehingga Ho ditolak dan Ha diterima.  Dari uji statistic disimpulkan terdapat perbedaan hasil belajar matematika pokok bahasan bangun ruang kelas VIII MTs USB Sagulung Batam yang pembelajarannya menggunakan metode diskusi dengan metode demonstrasi. Kata kunci: metode diskusi, metode demonstrasi, hasil belajar matematika      siswa.
Study on Volatile Compounds of Gelatine and The Maillard Reaction Products from Different Species Using SPME-GCMS Ismarti Ismarti; Dody Dwi Handoko; Kuwat Triyana; Hamzah M. Salleh; Nurrulhidayah A. Fadzillah; Noor Faizul Hadry Nordin
Science and Technology Indonesia Vol. 7 No. 2 (2022): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (711.334 KB) | DOI: 10.26554/sti.2022.7.2.132-139

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Food fraud and adulteration are the global issues, currently. One important issue is about gelatine since it comes from many sources of animals. Therefore, analytical method for gelatine must be developed and used for the authentication. This study was conducted to investigate the Volatile Compounds (VCs) of gelatine and the Maillard Reaction Products (MRPs) which are responsible to their aroma. Three gelatine standards from bovine, fish and porcine bought from Sigma Aldrich were used. A high reactivity reducing sugar namely xylose was used in the Maillard Reaction (MR). A Solid Phase Micro Extraction-Gas Chromatography-Mass Spectroscopy (SPME-GC-MS) used to evaluate the VCs in the samples. The VCs were identified by comparing the mass spectra of the compounds with database of NIST library. Moreover, retention time using the n-Alkane index were compared with literature data. There were 67 VCs have been identified. Among them, furfural, acetic acid, nonanone, dimethyl disulphide and decanone were considered as the important volatiles in gelatine due to its abundance. In the MRPs, furfural, 1-(2-furanylmethyl)-1H-pyrrole, 1-(2-furanyl)- ethanone, acetic acid and 2,2’-bifuran were predominant. Additionally, heptanol, octanal, nonanal, nonanone, dimethyl disulphide and dimethyl trisulphide could be considered as the important compounds due to its low odour threshold value. The compounds had a direct influence on the overall aroma of samples and could be potential to use in gelatine differentiation.
PEMBERDAYAAN MASYARAKAT PESISIR MELALUI PELATIHAN ECOPRINT MENGGUNAKAN TUMBUHAN LOKAL Ismarti Ismarti; Fitrah Amelia; Yesi Gusmania
JMM (Jurnal Masyarakat Mandiri) Vol 7, No 1 (2023): Februari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v7i1.12859

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Abstrak: Masyarakat pesisir Rempang Cate umumnya berprofesi sebagai nelayan. Kaum perempuan lebih banyak di rumah, dan sejak pandemi berlangsung, tidak memiliki aktivitas khusus di siang dan sore hari. Secara umum, kondisi perekonomian masyarakat Rempang Cate berada pada kategori golongan masyarakat menengah ke bawah yang perlu mendapat perhatian untuk dapat memberdayakan diri mereka, sehingga dapat meningkatkan taraf ekonomi keluarga pada umumnya. Kegiatan ini selain bertujuan untuk menambah pengetahuan tentang zat warna alam dan keterampilan dalam membuat kain ecoprint, juga diharapkan dapat menjadi peluang usaha bagi penduduk setempat, utamanya kaum ibu. Kegiatan diawali dengan demonstrasi yang dilakukan oleh pemateri, kemudian dilanjutkan dengan workshop yang dilakukan oleh peserta secara berkelompok. Kegiatan pengabdian masyarakat ini dilaksanakan pada bulan November 2022 yang bertempat di RW 1 Desa Rempang Cate Kecamatan Galang, Kepulauan Riau. Peserta dari kegiatan ini adalah warga masyarakat yang melibatkan sebanyak 16 orang. Berdasarkan hasil angket yang telah disebarkan, dapat disimpulkan bahwa melalui kegiatan ini pengetahuan dan keterampilan peserta meningkat rata-rata 94,8%. Abstract: Rempang Cate coastal communities generally work as fishermen. Most of women are more at home, and since the pandemic took place, they have no special activities in the afternoon and evening. In general, the economic condition of the Rempang Cate community is on the middle to lower class category which needs attention in order to be able to empower themselves, so as to improve the economic standard of the family in general. Apart from aiming to increase knowledge about natural dyes and skills in making ecoprint fabrics, this activity is also expected to become a business opportunity for local residents, especially mothers. The activity began with demonstrations conducted by the presenters, then continued with workshops by participants in groups. This community service activity was carried out in November 2022 which took place in RW 1 of Rempang Cate Village, Galang District, Riau Islands. Participants in this activity were local residents involving 16 people. Based on the results of the questionnaire that was distributed, it can be concluded that through this activity the participants' knowledge and ability increased by an average of 94.5%.  
Kandungan Tembaga (Cu) dan Timbal (Pb) pada Lamun Enhalus accoroides dari Perairan Batam, Kepulauan Riau, Indonesia Ismarti Ismarti; Ramses Ramses; Fitrah Amelia; Suheryanto Suheryanto
Depik Vol 6, No 1 (2017): April 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (623.085 KB) | DOI: 10.13170/depik.6.1.5555

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The objective of the present study was to analyze the metal content of copper and lead in Enhalus accoroides seagrass in Batam Island waters. Samples of seagrass (E. accoroides) were collected from six locations along the western region of Batam Island then dried and performed with acid destruction. The measurements of Cu and Pb in the samples were conducted by Atomic Absorption Spectrophotometer. The result showed that there was an increasing of copper and lead contaminant level on sample E accoroides during two periods in a year.  The Cu level ranged from 0.63 to 46.1 mg/kg, meanwhile, lead level ranged from  2.14 to 10.52mg/kg respectively. The highest accumulation of copper and lead were recorded on leaves, it was reached 10.81 mg/kg and 5.98mg/kg, respectively.Penelitian ini bertujuan menganalisis kandungan logam tembaga (Cu) dan timbal (Pb) pada lamun Enhalus accoroides di sepanjang perairan barat Pulau Batam. Sampel lamun dikumpulkan dari enam lokasi  kemudian dikeringkan dan dilakukan destruksi dengan asam. Penentuan kadar logam tembaga dan timbal dalam sampel dilakukan dengan spektrometri serapan atom. Hasil penelitian menunjukan adanya peningkatan kadar logam Cu dan Pb pada sampel lamun E. accoroides selama 2 periode sampling dalam 1 tahun. Kadar logam Cu dan Pb pada lamun secara berturut berada pada rentang 0.63-46.1 mg/kg dan 2.14-10.52mg/kg. Akumulasi logam Cu dan Pb dalam lamun E. accoroides tertinggi pada bagian daun sebanyak 10.81 mg/kg Cu dan 5.98 mg/kg Pb. 
PELATIHAN PEMANFAATAN TEKNOLOGI SEBAGAI MEDIA PEMBELAJARAN MATEMATIKA YANG MUDAH DAN MENYENANGKAN BAGI GURU MENTAL ARITMATIKA ASMA BATAM Hanggara, Yudhi; Amelia, Fitrah; Gusmania, Yesi; Ismarti, Ismarti; Putra, Jaya Dwi
MINDA BAHARU Vol 7, No 2 (2023): Minda Baharu
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/jmb.v7i2.5681

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Kemajuan teknologi informasi dan komunikasi (TIK) telah menghadirkan berbagai inovasi dalam metode pengajaran matematika. Teknologi membuka pintu untuk pembelajaran yang lebih mudah dan menyenangkan, yang dapat meningkatkan minat serta pemahaman siswa terhadap matematika. Faktanya, pemanfaatan teknologi dalam pembelajaran masih belum dilakukan oleh sebagian besar guru. Tujuan pengabdian masyarakat ini adalah untuk memberikan pengetahuan dan pemahaman terkait pemanfaatan teknologi sebagai media yang dapat digunakan dalam kegiatan pembelajaran. Sasaran kegiatan pengabdian ini adalah guru Mental Aritmatika ASMA Batam. Kegiatan pengabdian masyarakat ini dilakukan dalam tiga tahapan yaitu perencanaan, pelaksanaan dan evaluasi. Secara keseluruahan kegiatan pengabdian ini berjalan dengan baik. Hal ini dapat dilihat dari antusias peserta selama mengikuti kegiatan dan hasil evaluasi yang diberikan setelah berakhirnya kegiatan. Berdasarkan hasil evaluasi secara keseluruhan peserta kegiatan merasa puas dengan pelaksanaan pengabdian ini dengan persentase kepuasan adalah 76,9% mengatakan sangat puas dan 21,1% puas.
Systematics Literature Review: The use of learning media to improve student's mathematical creative thinking skills in 21st century learning Qoriaturrosyidah, Fitri; Simanjuntak, Friska Yanti; Mawaddah, Dina; Daniel Marpaung, Carlos Bettran; Hanggara, Yudhi; Ismarti, Ismarti; Hartanto, Suryo; Hermansah, Hermansah
CAHAYA PENDIDIKAN Vol 11, No 1 (2025): JCP (Jurnal Cahaya Pendidikan) Fakultas Keguruan dan Ilmu Pendidikan
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/chypend.v11i1.7228

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This research aims to review the literature related to the use of learning media in enhancing mathematical creative thinking skills. The method applied in this research is the Systematic Literature Review (SLR). As many as 20 articles were used as data sources in this study. Data were collected by reviewing all articles obtained from the period 2018 to 2023. To complete this research, various journal articles were collected through Google Scholar with the help of the Harzing's Publish or Perish application. The keywords in this article are "learning media and mathematical creative thinking skills." The research results show that the R&D (Research and Development) research method is used more frequently, accounting for 55%, compared to other research methods, with the topic of using electronic learning media to enhance students' mathematical creative thinking skills. Furthermore, the use of electronic learning media, such as e-comics, e-modules, learning videos, educational games, mobile learning, edutainment games, visual videos, Adobe Flash Professional, Go-Metra board games on geometry transformation material, Articulate Storyline 3, and e-learning, is effective in improving students' mathematical creative thinking skills. It is hoped that the results of this research can provide useful information for other researchers and assist educators in applying learning media to enhance students' mathematical creative thinking skills in the 21st-century learning era.
Analysis of Abundance, Length-Weight Relationship, and Condition Factors of Bulleye Snails (Turbo argyrostoma) on the Batam Coast Hasibuan, Nirma Adeseprianah; Novianti, Devi; Ramses, Ramses; Amelia, Fitrah; Ismarti, Ismarti
BIOEDUSCIENCE Vol 9 No 2 (2025): BIOEDUSCIENCE
Publisher : Universitas Muhammadiyah Prof. Dr. Hamka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/jbes/17820

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Background: The oxeye snail (Turbo argyrostoma) is a marine gastropod commonly harvested by coastal communities for consumption. Intensive and unregulated harvesting may lead to population decline, raising concerns for ecosystem stability and resource sustainability. This activity directly reduces the population of T. argyrostoma in coastal waters. This study aims to determine the abundance and the correlation between the length-weight and condition factors of T. argyrostoma in the waters of Batam, Riau Islands. Method: This study was performed from September to October 2024. Sampling was conducted at three locations: Kajang Island, Piring Island, and Layang Island. The sampling method conducted was purposive sampling. Water quality measurements were carried out in situ. Abundance was determined based on the number of individuals per unit area. Morphometric data were collected by measuring the body dimensions of T. argyrostoma using digital callipers. Next, the length-weight relationship was analysed using linear regression to determine growth patterns. Results: The aquatic environment met the quality standards set by the Minister of Environment, as outlined in Decree No. 51/2004. The highest abundance of T. argyrostoma was observed at Kajang Island (1.37 ind/m²). Morphometric measurements showed mean shell length (SL) of 39 ± 4.83 mm, weight (W) of 21.3 ± 4.58 g, and shell width (SW) of 30.3 ± 3.25 mm in Layang Island samples. A positive length–weight relationship was identified at all stations (r = 0.73, 0.45, 0.78) with allometric growth coefficient (b) values indicating growth patterns. Condition factors (K and Wr) varied across locations: 6.766 and 70.340 at Piring Island; 6.518 and 103.984 at Kajang Island; and 6.229 and 101.037 at Layang Island, respectively. Conclusion: A positive length–weight relationship was observed at all sites, and variation in condition factors suggests differing ecological pressures. The low Wr value at Piring Island may indicate environmental stress or higher predation pressure.
Abundance, Morphometrics, Length-Weight Relationship, and Condition Factors of Lola Snails (Rochia Niloticus L) in the Waters of Sarang Island, Belakang Padang, Batam Dinata, Rifal; Ramses, Ramses; Amelia, Fitrah; Ismarti, Ismarti
Aceh Journal of Animal Science Vol 10, No 1 (2025): February 2025
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/ajas.10.1.43614

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Lola snails (Rochia niloticus) are biota that are widely consumed by coastal communities in Batam waters. Even though it is not a favored commodity, exploitation that does not consider sustainability can lead to population scarcity in nature. This research aims to collect comprehensive data regarding the abundance, morphometrics, and weight-length relationship of Lola snails in the waters of Sarang Island, Batam. Sampling was carried out at 3 locations, including Kajang, Piring, and Layang Islands. The Lola snail sampling method was carried out using purposive sampling. Water quality measurements are carried out in situ. Morphometric data were collected by measuring the body dimensions of Lola snails using digital calipers. Abundance was determined based on the number of individuals per unit area, and the length-weight relationship was analyzed using linear regression to determine growth patterns. The research results show that the condition of the aquatic environment still meets the environmental quality standards set by the Ministry of Environment No. 51 of 2004. The abundance of Lola snails was in range of 0.22- 0.97 ind/m2, and the highest was found on Kajang Island. The results of morphometric measurements showed that the highest shell length, weight, and shell width were observed in Lola snail samples from Kajang Island with values of 48.40 25.28 mm, 68.77 101.55 mg, and 44.42 23.28 mm. There is a relationship between the growth patterns of Lola snails caught at three stations which have negative allometric growth patterns, where Kajang Island, Piring Island, and Layang Island have negative allometric growth patterns (b3) with exponential values of 0.9685, 1.5121, and 2.5471, respectively. The value of relative weight condition factor (Wr) shows a value close to 100 on Kajang, Piring, and Layang Island, namely 102.753 and 104.812, 99.654, which indicates that Lola snails were in good condition during the research.
KONSEP PENDIDIKAN LINGKUNGAN HIDUP DALAM PANDANGAN ISLAM Sulistyo, Agus; Ismarti, Ismarti
CAHAYA PENDIDIKAN Vol 4, No 1 (2018): JCP (Jurnal Cahaya Pendidikan) Fakultas Keguruan dan Ilmu Pendidikan
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.853 KB) | DOI: 10.33373/chypend.v4i1.1281

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The environmental crisis, known as the ecological crisis, is becoming more widespread. It demands our care as human beings who assume the role of khalifah on earth to actively participate in preventing more massive environmental damage. Man can’t live alone without the support of various resources that exist in his environment. However, the awareness of the importance of preserving and protecting the natural is still lacking. Environmental education is expected to be a vehicle to educate the general public and learners, in particular, to better understand the global environmental crisis phenomenon and foster an attitude to be more concerned with the environment, by internalizing religious values. Building an ecologically-based religious spirit should be conducted simultaneously and sustainably at all levels and compositions of the community especially Muslims, given that the ecological crisis has a universal impact. Recognizing the role of human as a caliph who is in charge of safeguarding and managing nature and the consequences of damaging the environment in terms of Islamic perspective is expected to arouse public awareness to participate actively in maintaining, managing wisely and preserving the surrounding environment. Keywords: environmental ethics; environmental education; conservation; Islam.
PENGARUH PENGGUNAAN ASAM ORGANIK UNTUK MENURUNKAN KADAR LOGAM TIMBAL (Pb) PADA DAGING SIPUT GONGGONG (THE EFFECT OF THE USE OF ORGANIC ACIDS TO REDUCE THE LEVELS OF METAL LEAD (Pb) ON THE MEAT OF GONGGONG SNAILS) Amelia, Fitrah; Ramses, Ramses; Ismarti, Ismarti
Indonesian Journal of Pure and Applied Chemistry Vol 7, No 1 (2024)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v7i1.64459

Abstract

Pollution that often occurs at sea is heavy metal pollution. Heavy metals that often pollute are Lead metals (Pb). Heavy metal pollution that occurs often has an impact on plants and animals that live in the sea. Animals that are often contaminated with heavy metals are snails because of the nature of snails that can accumulate metals due to their persistent nature, filter feeders, slow movements to avoid metal pollution. The purpose of this study is to reduce metal pollution in seafood, one of the ways that can be done by soaking seafood using organic acids such as tamarind and lime, because organic acids contain citric compounds that can bind to metals. This type of research is an experimental research design with Randomized Pretest-posttest control group design. The experimental design used was a Completely Randomized Design (CRD). Metal content analysis was carried out using the Perkin Elmer Type PinAAcle 900T brand AAS. The results were obtained that tamarind can decrease Pb metal levels in the bark snail meat at optimum conditions at a concentration of 10%, immersion time of 60 minutes and a percentage reduction of 47.1%. While the optimum condition of lime occurs at 10% concentration and soaking time is 30 minutes with a 25% percent decrease. So it can be said that tamarind is better in reducing metal content compared to Lime