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All Journal Journal on Education KREATIF: Jurnal Pengabdian Masyarakat Nusantara Paulus Chem Engineering Journal
Andrew Rolas Siagian
IT DEL
Economics, Econometrics & Finance Education Engineering Health Professions Law, Crime, Criminology & Criminal Justice

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Upaya Meningkatkan Kemampuan Berpikir Kritis dan Berpikir Kreatif Matematis Siswa SMA Melalui Model Pembelajaran Search, Solve, Create, and Share (SSCS) Andrew Rolas Siagian
Journal on Education Vol 7 No 1 (2024): Journal on Education: Volume 7 Nomor 1 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v7i1.7052

Abstract

The purpose of this study was to obtain a comprehensive picture of critical thinking skills and creative thinking skills obtained through Search, solve, create and share (SSCS) learning. This study was a quasi-experimental study. The experimental class was given SSCS learning and the control class was given conventional learning. The instruments used consisted of critical thinking skills tests and creative thinking skills tests. The statistical analysis used in this study was the Mann-Whitney test and two-way ANOVA. The results of the study showed that: (1) The increase in critical thinking skills of students who received learning with the SSCS model was higher than students who received learning with the conventional model in the high KAM and medium KAM categories. While in the low KAM category there was no difference in the increase in critical thinking skills between students who received SSCS learning and students who received conventional learning; (2) The increase in creative thinking skills of students who received learning with the SSCS model was higher than students who received learning with the conventional model in the medium KAM and low KAM categories. While in the high KAM category there was no difference in the increase in creative thinking skills between students who received SSCS learning and students who received conventional learning. (3) There is an interaction effect between the SSCS learning model and the conventional learning model with students' initial abilities (KAM) on increasing students' creative thinking abilities; (4) There is an interaction effect between the SSCS learning model and the conventional learning model with students' initial abilities (KAM) on increasing students' creative thinking abilities.
Dari Sitoluama untuk Indonesia : Menumbuhkan Generasi Ilmuwan Melalui DMSC 2024 Regina Ayunita Tarigan; Asido Saragih; Junita Amalia; Jaya Santoso; Ana Muliyana; Sari Muthia Sari; Andrew Rolas Siagian
KREATIF: Jurnal Pengabdian Masyarakat Nusantara Vol. 5 No. 2 (2025): Jurnal Pengabdian Masyarakat Nusantara
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/kreatif.v5i2.6023

Abstract

The proficiency of Indonesian students in mathematics and science remains relatively low, as reflected in the 2022 PISA survey, which ranked Indonesia 69th out of 81 participating countries. This low level of mathematical and scientific literacy has become a major concern in efforts to improve the quality of education. This community service activity aims to foster interest and motivation among senior high school students (SMA/SMK/MA or equivalent) in the fields of mathematics, physics, chemistry, and biology through the organization of the Del Mathematics and Science Competition (DMSC) in 2024. The competition was conducted in two stages: an online preliminary round on November 2, 2024, and an on-site final round on November 9, 2024, at Institut Teknologi Del, coinciding with World Scientiest Day. The implementation method included competition promotion, online participant selection, and in-person contest execution with an objective scoring system. The findings indicated high enthusiasm among participants from various regions of Indonesia, along with improved understanding and confidence in solving concept-based problems. The implications of this activity suggest that science-based competitions can serve as effective platforms to raise public awareness of the importance of mastering science and support national efforts to enhance the quality of education in mathematics and science
Pengaruh Variasi Ukuran Tongkol Jagung dan Suhu Distilasi Terhadap Karakteristik Asap Cair Meiyer Marthen Kinda; Terecia Deswita Cristanti Sirait; Dedy Anwar; Ellyas Alga Nainggolan; Andrew Rolas Siagian
Paulus Chem Engineering Journal Vol 5 No 1 (2025): Vol.5 No.1 Agustus 2025 Paulus Chem Engineering Journal
Publisher : Prodi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63365/srj14630

Abstract

Jagung adalah satu diantara komoditas utama yang banyak dibudidayakan di Kabupaten Toba.  Produksi jagung yang tinggi menghasilkan limbah tongkol jagung yang dapat mencemari lingkungan. Penelitian ini bertujuan untuk mengoptimalkan pemanfaatan tongkol jagung menjadi asap cair melalui proses pirolisis, serta menganalisis pengaruh ukuran tongkol jagung (5, 10, dan 15 cm) dan suhu distilasi (100oC, 125oC, dan 150oC) terhadap karakteristik asap cair. Analisis meliputi warna, pH, kandungan asam asetat, fenol, bobot jenis, dan bahan terapung, serta kesesuaian hasil dengan Standar Nasional Indonesia (SNI) 8985-2021. Proses ini memanfaatkan kandungan tongkol jagung seperti selulosa (41%), hemiselulosa (36%), dan lignin (6%) yang dapat didegradasi secara termal menghasilkan asam asetat, fenol dan senyawa lainnya dan berfungsi sebagai antibakteri dan antioksidan. Hasil penelitian menunjukkan bahwa asap cair memiliki pH <3, asam asetat tertinggi (3%) pada ukuran 5 cm dan suhu 100oC, serta kandungan fenol yang rendah (0,000829-0,004937). Semua variasi tidak mengandung bahan terapung dan bobot jenis berkisar antara 1,0097-1,0159. Hasil ini mengindikasikan bahwa asap cair yang dihasilkan memenuhi standar SNI dan dapat menjadikannya sebagai solusi potensial untuk pengelolaan limbah jagung yang ramah lingkungan.
Co-Authors Ana Muliyana ANWAR, DEDY Asido Saragih Ellyas Alga Nainggolan Jaya Santoso JUNITA AMALIA MEIYER MARTHEN KINDA REGINA AYUNITA TARIGAN Sari Muthia Sari Terecia Deswita Cristanti Sirait