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All Journal Alchemy : Journal of Chemistry JOURNAL OF EDUCATION SCIENCE Jurnal Review Pendidikan dan Pengajaran (JRPP) MATHEMA: JURNAL PENDIDIKAN MATEMATIKA
Dewi Annisa, Dewi
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Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Social Sciences Other

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OPTIMASI METODE PENENTUAN KADAR LOGAM TEMBAGA DAN TIMBAL DALAM GULA PASIR SECARA SPEKTROFOTOMETRI SERAPAN ATOM DENGAN DESTRUKSI MICROWAVE DIGESTION Dewi, Diana Candra; Fauziyah, Begum; Suryadinata, Arief; Annisa, Dewi; Afifah, Nurul
ALCHEMY ALCHEMY (Vol.2 No.2
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.983 KB) | DOI: 10.18860/al.v0i0.2884

Abstract

Tembaga (Cu) dan Timbal (Pb) adalah bahan ikutan yang ditemukan dalam gula pasir. Penelitian ini  bertujuan mengetahui performa analitik kurva standar dengan penentuan suhu dan waktu terbaik destruksi menggunakan microwave digestion, serta performa analitik kurva adisi standar menggunakan suhu dan waktu terbaik destruksi.Penelitian  ini  meliputi penentuan performa  analitik  untuk kurva  standar yaitu linearitas, batas deteksi dan batas kuantitasi, sensitivitas, akurasi serta presisi untuk larutan standar Cu dan Pb, kemudian dilakukan pendestruksian sampel gula pasir dengan destruksi basah menggunakan microwave digestion dengan variasi suhu 160, 180 dan 200 oC dan variasi waktu 10, 15, 20 dan 30 menit dan waktu penyimpanan 1 sampai 5 hari. Penentuan  performa  analitik  juga ditentukan pada  kurva adisi standar untuk larutan Cu dan Pb yang telah ditambahkan sampel hasil destruksi.Hasil penelitian menunjukkan bahwa : Suhu dan waktu terbaik destruksi gula pasir menggunakan microwave digestion untuk analisis Cu yaitu suhu 200 oC dan waktu 15 menit serta waktu penyimpanan sampai 3 hari. Suhu dan waktu terbaik microwave digestion untuk menganalisa logam timbal (Pb) adalah 180 0C dan 10 menit serta waktu penyimpanan hanya sampai 1 hari. Performa  analitik  untuk kurva  standar  tembaga (Cu) meliputi r2 = 0,9993; LOD (Limit of Detection) 0,0011 ppm dan LOQ (Limit of Quantitation) 0,0036 ppm;  sensitivitas 0,2; rata-rata akurasi sebesar 99.96%; serta presisi 9,46%, sedangkan performa  analitik  untuk  kurva  adisi  standar  tembaga (Cu)  meliputi  r2 = 0,9999; LOD 0,0012 ppm dan LOQ 0,004 ppm; sensitivitas 0,1729, rata-rata akurasi sebesar 100,07% serta presisi 5,38%. Performasi analitik untuk kurva standar timbal (Pb) meliputi r2 = 0,9999; LOD 0,0019 ppm,  LOQ 0,0066 ppm; sensitivitas 0,1069 ppm ; rata-rata akurasi sebesar 99,56 % serta presisi 2,32 %. Performasi analitik kurva adisi standar timbal (Pb) meliputi r2 = 0,9999; LOD 0,0018 ppm, LOQ 0,0060 ppm; sensitivitas 0,1090 ppm; rata-rata akurasi sebesar 100,01 % serta presisi 1,94 %.
KONTRIBUSI MOTIVASI TERHADAP HASIL BELAJAR MATEMATIKA SISWA DI MTSN 2 ACEH BESAR Ardilla, Fadia Tasya; S, R M Bambang; Annisa, Dewi
JOURNAL OF EDUCATION SCIENCE Vol 9, No 2 (2023): OKTOBER 2023
Publisher : Universitas Ubudiyah Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33143/jes.v9i2.3430

Abstract

Dalam kegiatan belajar mengajar peranan motivasi sangat diperlukan karena menjadi salah satu penyebab tinggi atau rendahnya kualitas hasil belajar, khususnya pada pelajaran matematika. Kondisi tersebut dapat diketahui jika ada kontribusi motivasi terhadap hasil belajar siswa. Tujuan dari penelitian ini adalah untuk mengetahui ada tidaknya kontribusi motivasi terhadap hasil belajar matematika siswa di MTsN 2 Aceh Besar Tahun Ajaran 2022/2023. Adapun pendekatan yang digunakan yaitu pendekatan kuantitatif dengan jenis deskriptif korelasional. Populasinya yaitu semua siswa kelas VIII di MTsN 2 Aceh Besar. Penentuan sampel menggunakan teknik random sampling, sehingga sampel yang terpilih adalah kelas VIII-4. Pengumpulan data dilakukan dengan angket motivasi dan tes hasil belajar siswa. Data diolah menggunakan uji korelasi sederhana sampai koefisien determinasi setelah prasyarat pengujian terpenuhi. Setelah data diolah, diperoleh korelasi yaitu r = 0,478 berada pada nilai 0,40-0,599, dengan demikian tingkat hubungan antara motivasi dan hasil belajar matematika siswa tergolong dalam korelasi positif yang cukup kuat. Berdasarkan analisis koefisien determinasi motivasi belajar yaitu sebesar 22,8484% yang tergolong rendah mempengaruhi hasil belajar siswa, sehingga dapat disimpulkan bahwa motivasi memiliki kontribusi terhadap hasil belajar siswa di MTsN 2 Aceh Besar. Berdasarkan hasil penelitian diharapkan dapat menjadi acuan guru untuk lebih memperhatikan motivasi siswa agar memiliki motivasi yang tinggi, sehingga siswa mudah ketika menyelesaikan masalah dan mendapatkan hasil belajar yang maksimal. Kata Kunci: Motivasi Belajar, Hasil Belajar In teaching and learning activities, the role of motivation is very necessary because it is one of the causes of high or low quality of learning outcomes, especially in mathematics lessons. This condition can be seen if there is a motivational contribution to student learning outcomes. The aim of this research is to determine whether there is a contribution of motivation to students' mathematics learning outcomes at MTsN 2 Aceh Besar for the 2022/2023 academic year. The approach used is a quantitative approach with a correlational descriptive type. The population is all class VIII students at MTsN 2 Aceh Besar. The sample was determined using a random sampling technique, so that the sample selected was class VIII-4. Data collection was carried out using motivation questionnaires and student learning outcomes tests. The data is processed using a simple correlation test to determine the coefficient of determination after the test prerequisites are met. After the data was processed, a correlation was obtained, namely r = 0.478, with a value of 0.40-0.599, thus the level of relationship between motivation and students' mathematics learning outcomes was classified as a fairly strong positive correlation. Based on the analysis of the coefficient of determination of learning motivation, which is 22.8484%, which is classified as low in influencing student learning outcomes, so it can be concluded that motivation has a contribution to student learning outcomes at MTsN 2 Aceh Besar. Based on the research results, it is hoped that it can be a reference for teachers to pay more attention to student motivation so that they have high motivation, so that students can easily solve problems and get maximum learning results.Keywords: Learning Motivation, Learning Results
The Role of Interactive e-Modules Based on Realistic Mathematics Education to Improve Mathematical Representation Ability Annisa, Dewi; Khairunnisak, Cut; Fadhiliani, Dwi; Zubaidah, Tuti
MATHEMA: JURNAL PENDIDIKAN MATEMATIKA Vol 7, No 1 (2025): MATHEMA
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jm.v7i1.4844

Abstract

Excellent mathematical representation ability is needed by students to develop and deepen understanding and relationships between mathematical concepts. Therefore, the teacher has the responsibility to create learning that encourages mathematical representation ability. The existence of interactive e-modules with a realistic mathematic education approach makes it easy for students to learn interactively and adapt to different students' mathematical abilities. This study aims to determine the improvement of mathematical representation ability from the use of interactive e-modules with realistic mathematics education approach. This research is a quantitative research conducted on seventh grade students of SMPN 18 Banda Aceh which is divided into experimental and control classes. The data analysis technique used was analysis of variance (ANOVA) followed by t-test. The results showed that students' mathematical representation ability in the experimental class was better than the control class. The interaction between the use of E-modules and students' initial mathematical ability on mathematical representation ability showed that the use of E-modules and early mathematical ability together had a significant effect on improving mathematical representation ability. Students who have high early math ability have a great influence if given treatment in the form of using RME-based e-modules. Students with low early mathematical ability did not experience significant improvement. Interactive e-modules with the RME approach can be used to improve mathematical representation skills by considering students' early mathematical abilities.
PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR MATEMATIKA SISWA DI SMP Puteri, Maulidya; Zaura, Bintang; Annisa, Dewi
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 2 (2024): Volume 7 No. 2 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i2.27034

Abstract

In mathematics learning, students often face difficulties. One of the causes is the ineffective teaching model used by teachers, resulting in inadequate delivery of learning materials to the students. This study aims to determine whether there is an influence of the PBL model on the learning outcomes of eighth-grade students in class 1 at SMP Negeri 9 Banda Aceh. The approach used in this research is quantitative, and the research type is an experimental study with a true experimental design and a post-test only control format. The population of this study is all eighth-grade students at SMP Negeri 9 Banda Aceh, and the sample consists of students from class VIII 1 (experimental class) and class VIII 2 (control class) selected through random sampling techniques from the four available classes. Data collection was conducted using a test consisting of 5 questions. Questions 1-2 fall under categories C1-C2, questions 3-4 fall under category C3, and question 5 falls under category C4. The analysis of students' mathematics learning outcomes and hypothesis testing used a two-tailed t-test with a significance level of 5% (? = 0.025) and df = 56, resulting in t-calculated ? t-table, which is 6.703 ? 2.003. Based on the data analysis, it can be concluded that the problem-based learning model has an influence on the mathematics learning outcomes of students at SMP Negeri 9 Banda Aceh.
KEMAMPUAN SISWA PADA MATERI SPLDV MELALUI PEMBELAJARAN KOOPERATIF TIPE JIGSAW BERBANTUAN LUMIO Annisa, Dewi; Maturah, Silmi; Zaura, Bintang
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 4 (2024): Special Issue Vol. 7 No. 4 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i4.33704

Abstract

Kurangnya pemahaman konsep siswa, pembelajaran yang berfokus pada guru dan kurangnya penggunaan alat atau sarana pembelajaran digital menyebabkan rendahnya hasil belajar murid. Salah satu solusi alternatif yang bisa digunakan guru adalah dengan menerapkan model pembelejaran Kooperatif Tipe Jigsaw berbasis website Lumio.Penelitian ini dilakukan untuk menunjukkan ketuntasan hasil belajar siswa pada materi SPLDV melalui model pembelajaran kooperatif tipe Jigsaw berbantuan lumio mencapai nilai Kriteria Ketercapaian Tujuan Pembelajaran (KKTP) dikelas VIII MTsN Aceh Besar. Jenis penelitian ini adalahone-shot case study. Populasi penelitian ini adalah seluruh siswa kelas VIII MTsN 2 Aceh Besar dan sampel pada penelitian ini sebanyak 32 siswa dengan teknik simple random sampling. Teknik pengumpulan data menggunakan tes hasil belajar murid. Hasil penelitian menjelaskan bahwa terdapat ketuntasan hasil belajar siswa setelah diterapkan model pembelajaran kooperatif jenis jigsaw berbantuan lumio dengan yaitu 3,9174 1,645, maka ditolak dan menerima jadi model pembelajaran kooperatif tipe jigsaw berbantuan lumio mencapai Kriteria Ketercapaian Tujuan Pembelajaran (KKTP)
Co-Authors Ardilla, Fadia Tasya Arief Suryadinata Begum Fauziyah Bintang Zaura Cut Khairunnisak Diana Candra Dewi Fadhiliani, Dwi Maturah, Silmi Muhammad Afif Puteri, Maulidya S, R M Bambang Tuti Zubaidah