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All Journal Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Bioma : Jurnal Biologi Indonesia Journal of Physics and Its Applications JURNAL PENDIDIKAN TAMBUSAI Biopendix: Jurnal Biologi, Pendidikan dan Terapan Community Development Journal: Jurnal Pengabdian Masyarakat Eduproxima : Jurnal Ilmiah Pendidikan IPA MAHESA : Malahayati Health Student Journal Jurnal Pengabdian Masyarakat (ABDIRA) Indonesian Science Education Research (ISER) Indo-MathEdu Intellectuals Journal SEMESTA: Journal of Science Education and Teaching Mudabbir: Journal Research and Education Studies Journal of Comprehensive Science SEAQIS Journal of Science Education UNIVERSE : Journal of Science Education Teaching and Learning Economics Learning Experience & Social Thinking Education Journal
Lestari, Tuti
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Other

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Determination of Planning Target Volume (PTV) Margins Using Redefined Systematic and Random Error Equations from Single-Fraction Verification Data: A Case Study of Cervical Cervic Lestari, Tuti; Muttaqin, Afdhal; Hanisti, Fidhia; Diyona, Fiqi
Journal of Physics and Its Applications Vol 7, No 3 (2025): August 2025
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v7i3.24532

Abstract

This study aimed to determine the Planning Target Volume (PTV) margin by redefining the equations for systematic and random errors in a cervical cancer case. The research utilized first-fraction radiotherapy position verification data from 37 cervical cancer patients. These data comprised planned and actual positions, with the difference interpreted as the position shift. The systematic and random error equations proposed by the Royal College of Radiologists (2008) were redefined by adapting them to verification data, which were grouped into several PTV types and treated as daily fractions. The PTV margin was then calculated using formulas by Van Herk (2004), Stroom (2002), and ICRU Report 62. The results showed that the largest systematic and random errors occurred in the vertical and longitudinal directions, measuring 0.83 cm and 1.71 cm, respectively. The PTV margin calculated using the Van Herk method was comparatively larger than those obtained using the other two methods. The percentages of position shifts that exceeded the calculated PTV margins in the vertical, longitudinal, and lateral directions were 16%, 43%, and 35%, respectively. These findings indicate that the redefined equations are capable of compensating for the lack of position shift data across all radiotherapy fractions. The redefined approach can provide a more accurate estimation of PTV margins in cervical cancer treatment using single-fraction verification data. 
The Effect Of Creative Problem Solving Model On The Creative Thingking Skill Of Student At Smp Negeri 29 Padang Fitri, Nurmiati; Arif, Khairil; Lestari, Tuti; Yanto, Febri
SEMESTA: Journal of Science Education and Teaching Vol. 8 No. 2 (2025): Semesta: Journal of Science Education and Teaching
Publisher : Pendidikan IPA, FMIPA, UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/semesta/vol8-iss2/625

Abstract

This study aims to determine the effect of the Creative Problem-Solving (CPS) learning model on the creative thinking skills of eighth-grade students at SMP Negeri 29 Padang. The research employed a quasi-experimental design with a nonequivalent control group. The study was conducted at SMP Negeri 29 Padang, West Sumatra. The sample was selected using purposive sampling, consisting of 34 students from class VIII-9 as the experimental group and 34 students from class VIII-6 as the control group. The instrument used was a test in the form of essay questions. The results showed that the hypothesis was accepted, as the significance value obtained was less than 0.05. These findings suggest that the implementation of the Creative Problem-Solving learning model is an effective strategy for enhancing students’ creative thinking skills. Therefore, it is recommended that teachers integrate the CPS model into classroom instruction to encourage students to be more active, innovative, and capable of solving problems creatively.
Pengaruh Model Problem Based Learning terhadap Kemampuan Berpikir Kritis Peserta Didik Kelas VIII di SMPN 10 Padang Amriani, Mutiara; Lestari, Tuti; Putri, Rahmah Evita
Jurnal Pendidikan Tambusai Vol. 9 No. 3 (2025): Desember
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Latar belakang penelitian ini adalah rendahnya kemampuan berpikir kritis peserta didik. Salah satu solusi yang dapat dilakukan untuk meningkatkan kemampuan berpikir kritis adalah dengan menggunakan model PBL. Penelitian ini bertujuan untuk mengetahui pengaruh model PBL terhadap kemampuan berpikir kritis peserta didik pada materi sistem pencernaan dan sistem peredaran darah manusia di SMPN 10 Padang. Jenis penelitian yang digunakan adalah quasi experiment. Desain penelitian yang digunakan adalah Nonequivalent Control Group Design. Populasi dalam penelitian ini adalah peserta didik kelas VIII. Sampel dalam penelitian ini adalah kelas eksperimen dan kelas kontrol yang diambil melalui teknik purposive sampling. Data diperoleh dari hasil pemberian soal pretest-posttest, kemudian dianalisis melalui uji statistik deskriptif dan inferensial dengan menggunakan Microsoft Excel. Berdasarkan hasil analisis pada uji hipotesis menunjukkan uji perbedaan rata-rata posttest thitung > ttabel yaitu 3,722 lebih besar dari 1,999 sehingga dapat dikatakan Ho ditolak dan Ha diterima. Oleh karena itu dapat disimpulkan bahwa model PBL memberikan pengaruh signifikan terhadap kemampuan berpikir kritis peserta didik kelas VIII di SMPN 10 Padang.
Implementation of SSI-Based PBL Model to Develop Students' Critical Thinking Skills in Science Learning Febrianty, Riana; Az Zahra, Firda; Lestari, Tuti; Arif, Khairil
SEMESTA: Journal of Science Education and Teaching Vol. 8 No. 2 (2025): Semesta: Journal of Science Education and Teaching
Publisher : Pendidikan IPA, FMIPA, UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/semesta/vol8-iss2/645

Abstract

Critical thinking is one of the most essential skills to be developed in 21st-century education. However, many classroom activities still rely on conventional methods that fail to actively engage students. This study aimed to investigate the effect of integrating the Problem-Based Learning (PBL) model with Socio-Scientific Issues (SSI) on junior high school students’ critical thinking skills in the topics of ecology and biodiversity. A quasi-experimental method with a non-equivalent control group design was employed. The research subjects consisted of two eighth-grade classes at SMP Negeri 35 Padang: one class implemented the PBL-SSI model as the experimental group, while the other used conventional learning as the control group. Data were collected through pre-tests and post-tests and analyzed using the t-test. The results showed that before the intervention, students in both groups had comparable levels of critical thinking skills. However, after the intervention, the experimental group demonstrated a significant improvement (tcount = 7.234 > ttable = 2.005). Improvements were evident across six indicators of critical thinking, including information analysis, drawing conclusions, and evaluation. These findings indicate that the PBL-SSI model effectively enhances students’ critical thinking skills through meaningful, contextual, and applicable learning experiences. By incorporating real-life issues, this model encourages active student participation in discussion, problem-solving, and decision-making, thereby making the learning process more engaging and meaningful.
Pengaruh Penerapan Model Pembelajaran Read, Answer, Discuss, Explain and Create (RADEC) Terhadap Literasi Sains Peserta Didik Kelas VIII Idrus, Nur Istiqomah A.; Lestari, Tuti; Azzahra, Firda; Oktavia, Rani
Indo-MathEdu Intellectuals Journal Vol. 6 No. 6 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i6.4310

Abstract

The results of the Programme for International Student Assessment (PISA) show that the science literacy of students in Indonesia is still below the international average. A similar condition is also seen in the results of the Computer-Based National Assessment (ANBK) for eighth-grade students, which shows that science literacy skills have not been measured comprehensively. This study aims to determine the effect of the Read, Answer, Discuss, Explain, and Create (RADEC) learning model on the science literacy competence of eighth-grade students. This study is a quantitative study using a quasi-experimental method with a nonequivalent control group design. The research sample was determined using purposive sampling, involving one experimental class and one control class. The research instrument consisted of a 22-item multiple-choice science literacy test. Both groups were given pre-tests and post-tests to measure improvements in science literacy competence. The data were analyzed descriptively and quantitatively, with the results showing that Ha was accepted and H₀ was rejected. The t-test value showed that tcount 3.47 ≥ ttable 2.00, which was reinforced by the N-gain test results. These findings indicate a significant difference between the two groups, so it can be concluded that the application of the RADEC model has a positive effect on improving students' science literacy competency.
Pengaruh Penerapan Model Pembelajaran Inkuiri Terbimbing Berbantuan Flash Card Untuk Meningkatkan Kompetensi Belajar Siswa Pada Materi Zat Dan Perubahannya Alisa Putri, Rahmi; Prima Sari, Monica; Yanto, Febri; Lestari, Tuti
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh penerapan model pembelajaran inkuri terbimbing berbantuan flash card untuk meningkatkan kompetensi belajar peserta didik pada materi zat dan perubahannya. Jenis penelitian yang digunakan dalam penelitian ini adalah quasi eksperimen dengan desain pretest posttest non-equivalent control group design. Penelitian ini terdiri dari dua kelas sampel yaitu kelas eksperimen dan kelas kontrol dengan jumlah 62 peserta didik yang dipilih dengan teknik purposive sampling. Kelas eksperimen diberikan perlakuan menggunakan model pembelajaran inkuiri terbimbing berbantuan flash card sedangkan pada kelas kontrol menggunakan model pembelajaran konvensional. Berdasarkan hasil penelitian yang dilakukan, kelas eksperimen memiliki rata-rata N-Gain 0,71 dengan kategori tinggi dan kelas kontrol dengan rata-rata N-Gain 0,52 dengan kategori sedang. Berdasarkan uji hipotesis menggunakan uji-t didapatkan nilai t-hitung (4,47) dan t-tabel (2,04). Berdasarkan hal tersebut, disimpulkan bahwa penerapan model pembelajaran inkuri terbimbing berbantuan flash card memberikan pengaruh yang lebih baik dibandingkan model pembelajaran konvensional terhadap kompetensi belajar peserta didik pada materi zat dan perubahannya.
Infusing Vibrancy into Science Learning through Weismann: An Educational Game for Learning Plants and Animals’ Reproduction Systems Annisa, Nurul; Lestari, Tuti
SEAQIS Journal of Science Education Vol. 4 No. 02 (2024): SEAQIS Journal of Science Education
Publisher : SEAMEO QITEP in Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58249/sjse.v4i02.140

Abstract

This research endeavours to develop an educational game, Weismann, designed to enhance the engagement and effectiveness of teaching and learning about plants and animals’ reproduction systems. Named after August Friedrich Leopold Weismann, the pioneering scientist behind the germplasm theory, the game aims to infuse vibrancy into the learning experience. Adopting a Research and Development (R&D) framework, the study employs sourced data from multiple channels, including expert validation assessment scales as well as science teachers and their students’ feedback on their practical experiences as users. The findings reveal Weismann to be highly valid, scoring 91.2, and remarkably practical, with teachers and students rating it at 95.9 and 83.9, respectively. These results affirm the game’s efficacy as a valuable tool for science education, offering a dynamic and effective approach to learning.
Pengaruh Model Project Based Learning (PjBL) Terintegrasi STEAM terhadap Kemampuan Berpikir Kreatif Peserta Didik Octaviani, Feni; Lestari, Tuti; Yurnetti, Yurnetti; Oktavia, Rani
Jurnal Pendidikan Tambusai Vol. 9 No. 2 (2025): Agustus
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i2.31249

Abstract

Dominannya proses pembelajaran teacher-centered pada pembelajaran IPA di SMPN 1 Kinali membuat kemampuan berpikir kreatif peserta didik tergolong rendah. Untuk mendorong kemampuan tersebut, digunakan model pembelajaran Project Based Learning (PjBL) terintegrasi STEAM. Penelitian dilakukan dengan pendekatan kuantitatif melalui metode quasi eksperimen, rancangan non-equivalent control group design. Populasi penelitian mencakup peserta didik kelas VII TA. 2024/2025. Melalui teknik purposive sampling didapatkan sampel penelitian yaitu kelas VII.4 selaku kelas eksperimen dan kelas VII.2 selaku kelas kontrol. Instrumen yang mencakup, soal berpikir kreatif, angket respons peserta didik, dan lembar observasi keterlaksanaan pembelajaran. Pengujian hipotesis melalui uji t menunjukkan thitung 8,04 dan ttabel 2,05, thitung > ttabel artinya H1 diterima dan H0 ditolak. Keterlaksanaan PjBL terintegrasi STEAM tergolong sangat baik dengan persentase 97,22%. Angket respons peserta didik mendapatkan respons positif sebesar 95%. Dengan demikian, pemberian perlakuan dengan pembelajaran PjBL terintegrasi STEAM memberikan pengaruh pada peserta didik kelas VII SMPN 1 Kinali dalam berpikir kreatif.
Pengaruh Model Cooperative Learning Tipe Times Games Tournament Berbantuan Wordwall terhadap Motivasi Belajar IPA Kelas VIII SMP Negeri 10 Mukomuko As-Syifa, Nisa Nur; Lestari, Tuti; Putri, Rahmah Evita; Oktavia, Rani
Jurnal Pendidikan Tambusai Vol. 9 No. 2 (2025): Agustus
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i2.31437

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Cooperative Learning tipe Time Games Tournament (TGT) berbantuan Wordwall terhadap motivasi belajar IPA. Metode penelitian yang digunakan adalah kuantitatif dengan Posttest Only Control Group Design. Sampel penelitian adalah kelas VIII.C sebagai kelas eksperimen dan VIII.A sebagai kelas kontrol di SMP Negeri 10 Mukomuko yang dipilih menggunakan teknik purposive sampling. Instrumen penelitian berupa angket motivasi belajar yang telah valid dan reliabel. Analisis data dilakukan menggunakan uji-t setelah uji normalitas dan homogenitas terpenuhi. Hasil penelitian menunjukkan bahwa rata-rata skor motivasi belajar kelas eksperimen (80,68) lebih tinggi dibandingkan kelas kontrol (71,50), dengan thitung (4,95) > ttabel (2,00). Hal ini membuktikan bahwa penerapan model TGT berbantuan Wordwall berpengaruh signifikan terhadap motivasi belajar IPA.
Pengaruh Model Pembelajaran Inkuiri Terbimbing terhadap Hasil Belajar Kognitif Peserta Didik Kelas VII Pada Materi IPA Sembiring, Dea Laurenta Br; Azhar, Aulia; Lestari, Tuti; Oktavia, Rani
Jurnal Pendidikan Tambusai Vol. 9 No. 3 (2025): Desember
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Penelitian yang dilakukan bertujuan guna menganalisis dampak penggunaan model pembelajaran inkuiri terbimbing terhadap hasil belajar kognitif peserta didik kelas VII pada mata pelajaran IPA. Jenis penelitian ini adalah eksperimen semu dengan desain nonequivalent control group design. Sampel penelitian terdiri dari kelas eksperimen yang diberi perlakuan dengan model inkuiri terbimbing dan kelas kontrol yang menggunakan pembelajaran konvensional. Instrumen penelitian berupa tes pencapaian belajar, lembar observasi, dan kuesioner tanggapan peserta didik. Temuan penelitian mengindikasikan bahwa terdapat pegaruh model pembelajaran inkuiri terbimbing terhadap hasil belajar kognitif peserta didik kelas VII pada materi IPA perbedaan signifikan hasil belajar antara kelas eksperimen dan kelas kontrol. Kelas eksperimen memperoleh rata-rata posttest yang lebih tinggi dibandingkan dengan kelas kontrol (Zhitung = 3,12 ≥ Ztabel = 2,01). Dengan demikian, model pembelajaran inkuiri terbimbing berpengaruh positif terhadap peningkatan hasil belajar kognitif peserta didik pada materi IPA.
Co-Authors Afdhal Muttaqin Afriani, Nola Agus Irianto Alandita, Faizah Alfatini, Yumna Alisa Putri, Rahmi Amriani, Mutiara Andriziaswari, Ghina Reysa Arief Muttaqiin Armiati As-Syifa, Nisa Nur Az zahra, Firda Azeli, Jihan Azhar, Aulia Azira, Nur Azza Nuzullah Putri Azzahra, Firda Azzhara, Firda Barthana, Diannisa Christiani Tumilisar, Christiani Citra Manela Dessi Susanti DWI CAHYANI, INTAN Evita Putri, Rahmah Fatma wati Fatmawati, Fatmawati Fatmawati, Junita Febri Yanto, Febri Febrianty, Riana Fermunesti, Rasta Fiqi Diyona, Fiqi Fitri, Nurmiati Hanisti, Fidhia Hendriyani, Riri Heru Kurniawan Idrus, Nur Istiqomah A. Khairil Arif Khairun Nisa khairunnisa, kania Kurnia, Irma L. V, Yuhendri LV, Yuhendri Mailiyawati, Ghina Monica Prima Sari Nebila, Tiara Ningtyas, Ratu Dwi NURUL ANNISA Octaviani, Feni Oktafrida, Leni Oktavia, Rani Prima Sari, Monica Puteri, Dini Eka Putri, Biomechy Oktomalio Putri, Rahmah Evita Rahmadiyani, Rahmadiyani Rika Susanti Rini Rustini Rizkie, Ricky Rose Rahmidani Safitri, Violetta Sembiring, Dea Laurenta Br Siti Asiyah Skunda Diliarosta Stefvannof, Diego Syofyan, Rita Wahyuni, Setio Putri Ayu Sri Yuliani Yuliani Yurnetti, Yurnetti Zulhanif, Halimatun Saqdiah