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Validity of 21st-Century Integrated STEM Teaching Materials in Developing Students’ Critical Thinking Skills Saputra, Ahmad; Wilujeng , Insih; Wiyarsi, Antuni; Priatmoko, Sigit
PSEJ (Pancasakti Science Education Journal) Vol. 10 No. 2 (2025)
Publisher : Program Studi Pendidikan IPA, FKIP Universitas Pancasakti (UPS) Tegal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24905/psej.v10i2.286

Pendidikan merupakan tonggak utama kemajuan bangsa sehingga perlu menjadi perhatian utama bagi seluruh lapisan masyarakat. Hasil Programme for International Student Assessment (PISA) yang dirilis OECD pada tahun 2018 menunjukkan bahwa Indonesia menempati peringkat ke-73 dari 79 negara, atau peringkat ketiga dari bawah, dalam keterampilan berpikir kritis peserta didik. Kondisi ini menandakan perlunya peningkatan kualitas pendidikan melalui pengembangan bahan ajar yang efektif sebagai perangkat penting dalam proses pembelajaran. Penelitian ini bertujuan untuk mengembangkan bahan ajar kimia yang layak dan efektif dalam meningkatkan keterampilan berpikir kritis peserta didik. Metode penelitian yang digunakan adalah Research and Development (R&D) dengan model 4D (Define, Design, Develop, Disseminate) yang diadaptasi dari Thiagarajan et al. (1974). Penelitian dilaksanakan di SMA Negeri 12 Semarang dengan subjek penelitian terdiri atas dosen ahli materi dan media, guru kimia, serta peserta didik kelas XI F 7 sebanyak 36 orang. Data dikumpulkan melalui observasi, wawancara, angket, tes, dan dokumentasi. Hasil validasi bahan ajar oleh ahli materi, ahli media, dan guru kimia menunjukkan persentase kelayakan sebesar 98,05% dengan kategori sangat layak. Uji keterbacaan memperoleh persentase 87,83%, sedangkan respon peserta didik terhadap bahan ajar mencapai 88,79%.

The Evolution of Scientific Literacy Research in Science Education: A Bibliometric Analysis of Trends, Themes, and Collaboration (2016-2025) Saputra, Ahmad; Wilujeng, Insih; Wiyarsi, Antuni
Integrated Science Education Journal Vol 7 No 1 (2026): January
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/isej.v7i1.2532

Purpose of the study: This study aims to map the development of scientific literacy research within the field of science education by examining publication trends, influential contributors, thematic structures, and collaboration patterns based on Scopus-indexed literature published between 2016 and 2025. Methodology: A bibliometric analysis was conducted using the Scopus database. Relevant journal and review articles were retrieved using the keywords “scientific literacy” and “science education.” Bibliographic data were analyzed and visualized using the Bibliometrix package (R software) to examine publication growth, source impact, thematic evolution, and collaboration networks. Main Findings: The results reveal a steady increase in research output on scientific literacy in science education over the past decade, with contributions concentrated among a limited number of authors, journals, institutions, and countries. Core research themes include scientific literacy, science education, and nature of science, while emerging topics such as misinformation, climate literacy, digital literacy, and citizenship have gained prominence in recent years. Collaboration patterns indicate stable yet selective networks at both author and country levels. Novelty/Originality of this study: This study provides a comprehensive decade-long bibliometric mapping that integrates trends, contributor impact, thematic structures, and collaboration patterns in scientific literacy research within science education. The findings offer an updated multidimensional overview of the field, support clearer positioning of future research agendas, and highlight underexplored themes and opportunities for broader international collaboration.

Dampak Beban Kerja terhadap Kinerja Karyawan pada Kantor Konsultan Pajak Anggono, Anggono; Nasution, Siti Aisyah; Teng, Sauh Hwee; Tarwiyah, Tarwiyah; Saputra, Ahmad; Irawan, Ari; Wongsosudono, Corinna
Jurnal Manajemen Dan Akuntansi Medan Vol. 8 No. 1 (2026): Jurnal Manajemen Dan Akuntansi Medan Januari 2026
Publisher : Yayasan Cita Cendikiawan Al Kharizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/jumansi.v8i1.7242

Latar belakang: Penelitian ini berfokus pada permasalahan kinerja karyawan dengan mengkaji pengaruh beban kerja terhadap kinerja di kantor konsultan pajak. Studi ini bertujuan membandingkan kinerja karyawan yang menangani tiga kasus dengan mereka yang menangani lima kasus selama periode tiga bulan. Metode penelitian: Penelitian ini menggunakan desain quasi-experimental dengan kelompok non-ekivalen. Sampel penelitian terdiri dari 32 karyawan yang dipilih secara acak dari sebuah firma konsultan pajak. Data dikumpulkan menggunakan lembar observasi kinerja karyawan yang telah divalidasi sebelumnya. Analisis data dilakukan melalui statistik deskriptif, uji normalitas, uji homogenitas, dan uji independent samples t-test untuk mengetahui perbedaan kinerja antara dua kelompok karyawan yang memiliki beban kerja berbeda. Hasil penelitian: Hasil analisis menunjukkan bahwa terdapat perbedaan yang signifikan antara kinerja karyawan yang menangani tiga kasus dan lima kasus. Karyawan yang menangani tiga kasus memiliki rata-rata skor kinerja yang lebih tinggi dibandingkan dengan karyawan yang menangani lima kasus. Temuan ini menunjukkan bahwa peningkatan beban kerja berdampak negatif terhadap kinerja karyawan, di mana semakin banyak kasus yang ditangani, semakin rendah kualitas kinerja yang dihasilkan. Kesimpulan: Penelitian ini menyimpulkan bahwa beban kerja tinggi berdampak negatif terhadap kinerja karyawan. Oleh karena itu, manajer perlu mengatur beban kerja secara seimbang, dan penelitian selanjutnya disarankan menambahkan variabel seperti tekanan waktu, pengalaman, dan kompetensi karyawan untuk pemahaman yang lebih mendalam.

Studi Eksperimental Penambahan Zat Aditif Anti Stripping Agent pada Kinerja Campuran Aspal Karet (AC-WC) Saputra, Ahmad; Sazuatmo, Sazuatmo; Hariza, Elsa Rati
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 4 (2026): November - January
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i4.4480

Penelitian ini membahas pengaruh penambahan zat aditif terhadap campuran aspal karet (AC-WC) serta bagaimana stabilitas campuran berubah dengan penggunaan Anti Stripping Agent Wetfix BE. Variasi yang digunakan mencakup kadar aspal rencana 4,5%, 5%, 5,5%, dan 6%, serta kadar Wetfix BE sebesar 0,25%, 0,3%, 0,35%, dan satu campuran tanpa aditif pada lapisan Laston AC-WC. Data primer diperoleh melalui percobaan langsung di lokasi penelitian yang meliputi pemeriksaan karakteristik bahan, penentuan Kadar Aspal Optimum, dan pelaksanaan uji Marshall. Data sekunder dikumpulkan dari instansi terkait untuk memperkuat analisis dan membandingkan hasil pengujian. Hasil penelitian menunjukkan bahwa kadar aspal optimum untuk lapis permukaan AC-WC dengan aspal penetrasi 60/70 diperoleh sebesar 6,0%. Penggunaan Wetfix BE direkomendasikan pada kadar 3,5% karena dinilai mampu meningkatkan performa campuran aspal karet, terutama melalui peningkatan stabilitas. Pada pengujian Marshall, pembacaan nilai flow harus dilakukan secara teliti karena kesalahan pengukuran tidak dapat diperbaiki akibat kerusakan benda uji setelah proses penekanan. Untuk kondisi lalu lintas dengan beban berat, penggunaan Wetfix BE pada kadar 3,5% dianggap paling sesuai karena dapat meningkatkan ketahanan campuran AC-WC. Namun, penelitian ini juga menunjukkan bahwa pada kondisi tertentu, penambahan zat aditif justru dapat menurunkan stabilitas, sehingga pemilihan kadar aditif perlu disesuaikan dengan karakteristik material dan kebutuhan perkerasan.

Integration of PjBL-STEM and Virtual Laboratory as a Strategy to Enhance 21st Century Scientific Literacy in Junior High School Science Learning Saputra, Ahmad; Fandi, Real; Nurohman, Sabar; Natadiwijaya, Ismail Fikri; Wilujeng, Insih; Widowati, Asri; Damayanti, Herlina
IJIS Edu : Indonesian Journal of Integrated Science Education Vol 8, No 1 (2026): January 2026
Publisher : UIN Fatmawati Sukarno Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29300/ijisedu.v8i1.9287

This study aims to analyze the effectiveness of integrating Project-Based Learning (PjBL) with Science, Technology, Engineering, and Mathematics (STEM) and virtual laboratories in enhancing 21st-century scientific literacy among junior high school students. A quasi-experimental design employing a one-group pretest–posttest model was used, involving 25 seventh-grade students from SMP Negeri 11 Yogyakarta. Data were collected using a scientific literacy test encompassing three dimensions: explaining phenomena scientifically, interpreting data and scientific evidence, and evaluating and using scientific information. The results revealed a significant difference between pretest and posttest scores (p < 0.05), with a normalized gain score of 0.62 categorized as medium. The greatest improvement occurred in the dimension of explaining phenomena scientifically (0.83), followed by interpreting data and scientific evidence (0.67), and evaluating and using scientific information (0.58). The integration of PjBL-STEM with virtual laboratories enhanced students’ conceptual understanding, scientific reasoning, and inquiry skills through interactive and contextual learning experiences. These findings demonstrate that the hybrid PjBL-STEM model, supported by virtual laboratory simulations, effectively promotes 21st-century scientific literacy. Moreover, this study provides empirical evidence on how the integration of PjBL-STEM and virtual laboratories can bridge the gap in scientific literacy development within Indonesian secondary education.

PENGARUH BEBAN KERJA DAN LINGKUNGAN KERJA TERHADAP KINERJA PERAWAT GENERASI Z DI MEDIASI OLEH STRES KERJA PADA RSUD DR. PIRNGADI MEDAN Zahra, Aqilla Ulayya; Saputra, Ahmad; Julfizar
Skena Bisnis Vol. 3 No. 1 (2026): Skena Bisnis Journal (SB)
Publisher : Fakultas Ilmu Sosial Dan Humaniora, Universitas Ibbi

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This study aims to analyze the effect of workload and work environment on the performance of Generation Z nurses at Dr. Pirngadi Regional General Hospital, Medan, with job stress as a mediating variable. Using a quantitative approach with path analysis on 61 respondents, data were collected through validated and reliable questionnaires. The results show that workload and work environment significantly and positively affect job stress and performance, while job stress negatively affects performance. Moreover, job stress mediates the relationship between workload, work environment, and performance. These findings suggest that balanced workload management and a supportive work environment can reduce stress and enhance nurse performance.

The Efficacy of STEM-Integrated Teaching Materials in Improving High School Students' Critical Thinking Skills Saputra, Ahmad; Wilujeng, Insih; Wiyarsi, Antuni; Priatmoko, Sigit
Jurnal Pendidikan Sains Universitas Muhammadiyah Semarang Vol 14, No 1 (2026): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.14.1.2026.24-33

Education is a key pillar of a nation's progress. Results from the Program for International Student Assessment (PISA) 2022 indicate that Indonesian students' performance in reading, mathematics, and science remains below international averages, reflecting persistent challenges in higher-order thinking and problem-solving skills. This study aimed to develop STEM- based teaching materials integrated with 21st-century learning to enhance students' critical thinking skills. The research employed a Research and Development (R&D) approach using the 4D model (define, design, develop, disseminate). Participants included material and media experts, chemistry teachers, and 36 Grade XI students. Critical thinking skills were measured using pretest–posttest assessments aligned with Ennis' indicators, expert validation sheets, and student response questionnaires. The results showed that expert feasibility ratings reached 98.05% (highly feasible), user responses were 88.79%, and readability was 87.83%. The effectiveness of the materials was supported by a high N-Gain score of 0.73, indicating substantial improvement in students' critical thinking skills. Overall, the developed teaching materials were feasible, well-received, and effective in improving students' critical thinking skills. These findings imply that systematically integrating STEM principles with 21st-century learning skills can serve as an effective instructional strategy to strengthen higher-order thinking in chemistry education. Future research is recommended to conduct large-scale experimental studies across diverse school contexts and to explore digital integration to enhance scalability and long-term impact.

Peningkatan Pemahaman Pelaporan Pajak Penghasilan Manajemen Yayasan Pengelola Jurnal Elektronik: Peningkatan Pemahaman Pelaporan Pajak Penghasilan Manajemen Yayasan Pengelola Jurnal Elektronik anggono, anggono; Aisyah Nasution, Siti; Teng, Sauh Hwee; Dini, Siti; Harianti, Puji; wiyah, Tar; Saputra, Ahmad; Irawan, Ari; Siregar, Melinda; Wongsosudono, Corinna
Jurnal Mitra Prima Vol. 8 No. 1 (2026): JURNAL MITRA PRIMA
Publisher : Mitra prima

Show Abstract | Download Original | Original Source | Check in Google Scholar

This community service activity was conducted to improve tax understanding through socialization in the form of training at Yayasan Literasi Emas Nusantara. The main issue addressed by the foundation was that many members had not yet comprehensively understood tax obligations, including tax reporting procedures. The activity was carried out using lecture-based instruction, simulations, and interactive question-and-answer sessions. To measure the improvement in participants’ understanding, pre-tests and post-tests were administered with a success indicator of an average score of 60. The pre-test results showed an average score of 43, while the post-test score increased to 62, exceeding the predetermined indicator. These results indicate that tax socialization and training effectively improved participants’ tax understanding. Furthermore, adequate tax knowledge can enhance taxpayers’ compliance and independence in reporting personal taxes. However, the limitation of this activity was the relatively short training duration; therefore, follow-up training with sufficient time allocation is recommended for deeper material comprehension.

The Evolution of Scientific Literacy Research in Science Education: A Bibliometric Analysis of Trends, Themes, and Collaboration (2016-2025) Saputra, Ahmad; Wilujeng, Insih; Wiyarsi, Antuni
Integrated Science Education Journal Vol 7 No 1 (2026): January
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/isej.v7i1.2532

Purpose of the study: This study aims to map the development of scientific literacy research within the field of science education by examining publication trends, influential contributors, thematic structures, and collaboration patterns based on Scopus-indexed literature published between 2016 and 2025. Methodology: A bibliometric analysis was conducted using the Scopus database. Relevant journal and review articles were retrieved using the keywords “scientific literacy” and “science education.” Bibliographic data were analyzed and visualized using the Bibliometrix package (R software) to examine publication growth, source impact, thematic evolution, and collaboration networks. Main Findings: The results reveal a steady increase in research output on scientific literacy in science education over the past decade, with contributions concentrated among a limited number of authors, journals, institutions, and countries. Core research themes include scientific literacy, science education, and nature of science, while emerging topics such as misinformation, climate literacy, digital literacy, and citizenship have gained prominence in recent years. Collaboration patterns indicate stable yet selective networks at both author and country levels. Novelty/Originality of this study: This study provides a comprehensive decade-long bibliometric mapping that integrates trends, contributor impact, thematic structures, and collaboration patterns in scientific literacy research within science education. The findings offer an updated multidimensional overview of the field, support clearer positioning of future research agendas, and highlight underexplored themes and opportunities for broader international collaboration.

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