Afdareza, M. Y., Yuanita, P., & Maimunah, M. (2020). Development of learning device based on 21st century skill with implementation of problem-based learning to increase critical thinking skill of students on polyhedron for grade 8th junior high school. Journal of Educational Sciences, 4(2), 273-284.

Akhdinirwanto, R. W., Agustini, R., & Jatmiko, B. (2020). Problem-based learning with argumentation as a hypothetical model to increase the critical thinking skills for junior high school students. Jurnal Pendidikan IPA Indonesia, 9(3), 340-350.

Amin, S., Utaya, S., Bachri, S., Sumarmi, & Susilo, S. (2020). Effect of problem-based learning on critical thinking skill and environmental attitude. Journal for the Education of Gifted Young Scientists, 8(2), 743-755. https://bit.ly/4jfOD2o

Anazifa, R. D. (2016). The effect of problem-based learning on critical thinking skills and student achievement. In Proceeding of 3rd International Conference on Research, Implementation and Education of Mathematics and Science (pp. 43-48). Yogyakarta State University.

Antonio, R. P., & Prudente, M. S. (2024). Effects of inquiry-based approaches on students' higher-order thinking skills in science: a meta-analysis. International Journal of Education in Mathematics, Science and Technology, 12(1), 251-281. https://doi.org/10.46328/ijemst.3216

Arifin, S., Setyosari, P., Sa’dijah, C., & Kuswandi, D. (2020). The effect of problem-based learning by cognitive style on critical thinking skills and students’ retention. Journal of Technology and Science Education, 10(2), 271-281. https://doi.org/10.3926/jotse.790

Asigigan, S. İ., & Samur, Y. (2021). The effect of gamified STEM practices on students' intrinsic motivation, critical thinking disposition levels, and perception of problem-solving skills. International Journal of Education in Mathematics, Science and Technology, 9(2), 332-352. https://doi.org/10.46328/ijemst.1157

Aswan, D. M., Lufri, L., & Sumarmin, R. (2018). Influence of problem-based learning on critical thinking skills and competence class VIII SMPN 1 Gunuang Omeh, 2016/2017.  IOP Conference Series: Materials Science and Engineering, 335, Article 012128. https://doi.org/10.1088/1757-899X/335/1/012128

Aytaç, T., & Kula, S. S. (2020). The effect of student-centered approaches on students’ creative thinking skills: A meta-analysis study. International Journal of Contemporary Educational Research, 7(2), 62-80. https://doi.org/10.33200/ijcer.723894

Cecily, H. S. J., & Omoush, A. (2014). Efficacy of problem-based learning (PBI) over lecture method in enhancing the critical thinking skills and problem-solving ability among nursing students in KSA. International Journal of Educational Science and Research, 4(5), 1-8.

Dakabesi, D., & Luoise, I. S. Y. (2019a). The effect of problem-based learning model on critical thinking skills in the context of chemical reaction rate. Journal of Education and Learning 13(3), 395-401. https://doi.org/10.11591/edulearn.v13i3.13887

Dakabesi, D., & Luoise, I. S. Y. (2019b). The effectiveness of problem-based learning model to increase the students’ critical thinking skills. Journal of Education and Learning, 13(4), 543-549. https://doi.org/10.11591/edulearn.v13i4.12940

Dianita, B., & Tiarani, V. A. (2023). Problem based learning model with experiential learning to increase creative thinking and critical thinking ability. Jurnal Penelitian dan Pengembangan Pendidikan, 7(2), 328-335. https://doi.org/10.23887/jppp.v7i2.62254

Elbyaly, M. Y. H., & Elfeky, A. I. M. (2023). The impact of problem-solving programs in developing critical thinking skills. European Chemical Bulletin, 12(SI6), 6636-6642.

Erlangga, S. Y., Jumadi, Nadhiroh, N., & Wingsih, P. H. (2021, March). The effectiveness of using worksheets with problem-based learning (PBL) through Google Classrooms to improve critical thinking skills during the Covid-19 pandemic. In 6th International Seminar on Science Education (ISSE 2020) (pp. 427-433). Atlantis Press. https://doi.org/10.2991/assehr.k.210326.061

Fadilla, N., Nurlaela, L., Rijanto, T., Ariyanto, S. R., Rahmah, L., & Huda, S. (2021). Effect of problem-based learning on critical thinking skills. Journal of Physics: Conference Series, 1810, Article 012060. https://doi.org/10.1088/1742-6596/1810/1/012060

Febrianto, T., Ngabekti, S., & Saptono, S. (2021). The effectiveness of schoology-assisted PBL-STEM to improve critical thinking ability of junior high school students. Journal of Innovative Science Education, 10(2), 222-229. https://bit.ly/4mjwQug

Fitriani, A., Zubaidah, S., Susilo, H., & Al Muhdhar, M. H. I. (2020). The correlation between critical thinking skills and academic achievement in biology through problem-based learning-predict observe explain (PBLPOE). International Journal of Learning and Teaching, 6(3), 170-176. https://doi.org/10.18178/ijlt.6.3.170-176

Gholami, M., Moghadam, P. K., Mohammadipoor, F., Tarahi, M. J., Sak, M., Toulabi, T., & Pour, A. H. H. (2016). Comparing the effects of problem-based learning and the traditional lecture method on critical thinking skills and metacognitive awareness in nursing students in a critical care nursing course. Nurse Education Today, 45, 16-21. https://doi.org/10.1016/j.nedt.2016.06.007

Haniko, P., Sarumaha, Y. A., Satria, E., Hs, N., & Anas. (2023). Building students’ critical thinking skill through problem-based learning model. Widya Accarya, 14(1), 92-98. https://doi.org/10.46650/wa.14.1.1409.92-98

Hidayat, R. N., Rukmini, D., & Bharati, D. A. L. (2019). Developing problem-solving based assessment to stimulate critical thinking and creativity of students’ writing skill. English Education Journal, 9(2), 164-171.  

Hidayati, T., & Purwaningsih, D. (2023). The effect of applying problem-based learning model on students’ critical thinking ability science subjects in grade V elementary school. Jurnal Pendidikan Indonesia, 12(3), 576-585. https://doi.org/10.23887/jpiundiksha.v12i3.55235

Hussin, W. N. T. W., Harun, J., & Shukor, N. A. (2019). Problem based learning to enhance students critical thinking skill via online tools. Asian Social Science, 15(1), 14-23. https://doi.org/10.5539/ass.v15n1p14

Ibrahim, Almukarramah, Gunawan, Marwan, &Yahya, D. (2020). Implementation of problem-based learning to improve students’ critical thinking skills. Journal of Physics: Conference Series, 1460, Article 012058. https://doi.org/10.1088/1742-6596/1460/1/012058

Ibrahim, I., Sujadi, I., Maarif, S., & Widodo, S. A. (2021). Increasing mathematical critical thinking skills using advocacy learning with mathematical problem solving. Jurnal Didaktik Matematika, 8(1), 1-14. https://doi.org/10.24815/jdm.v8i1.19200

Is'ad, N., & Sukarmin, S. (2022). Implementation of problem-solving learning model assisted by student worksheets to improve critical thinking skills in the context of reaction rate. Jurnal Pijar Mipa, 17(2), 199-208. https://bit.ly/4meJSsR

Iswara, E., Darhim, & Juandi, D. (2021). Students’ critical thinking skills in solving problems on the topic of sequences and series. Plusminus: Jurnal Pendidikan Matematika, 1(3), 385-394. https://doi.org/10.31980/plusminus.v1i3.941

Kusmaharti, D., & Yustitia, V. (2022). Self-regulated learning-based digital module development to improve students’ critical thinking skills. Al-Jabar: Jurnal Pendidikan Matematika, 13(1), 211-220.  https://doi.org/10.24042/ajpm.v13i1.12756

Kusuma, E. D., Gunarhadi, G., & Riyadi, R. (2018). The strategies to improve critical thinking skills through problem-based quantum learning model at primary school. International Journal of Multicultural and Multireligious Understanding, 5(4), 123-127. https://doi.org/10.18415/ijmmu.v5i4.213

Lubis, R. R., Irwanto, I., & Harahap, M. Y. (2019). Increasing learning outcomes and ability critical thinking of students through application problem-based learning strategies. International Journal for Educational and Vocational Studies, 1(6), 524-527. https://doi.org/10.29103/ijevs.v1i6.1679

Lukitasari, M., Purnamasari, I., Utami, S., & Sukri, A. (2019). Blended-problem-based learning: How its impact on students’ critical thinking skills? Jurnal Pendidikan Biologi Indonesia, 5(3), 425-434. https://bit.ly/4dk0aMY  

Manuaba, I. B. A. P., -No, Y., & Wu, C.-C. (2024). The effectiveness of problem-based learning in improving critical thinking, problem-solving and self-directed learning in first-year medical students: A meta-analysis. PLOS ONE, 17(11), Article 0277339. https://doi.org/10.1371/journal.pone.0277339

Mardi, Fauzi, A., & Respati, D. K. (2021). Development of students’ critical thinking skills through guided discovery learning (GDL) and problem-based learning models (PBL) in accountancy education. Eurasian Journal of Educational Research, 95, 210-226. https://bit.ly/3YHZ7QS

Masruro, S., Sudibyo, E., & Purnomo, T. (2021). Profile of problem-based learning to improve students’ critical thinking skills. IJORER: International Journal of Recent Educational Research, 2(6), 682-699.  https://doi.org/10.46245/ijorer.v2i6.171

Miterianifa, M., Trisnayanti, Y., Khoiri, A., & Ayu, H. D. (2019). Meta-analysis: The effect of problem-based learning on students’ critical thinking skills. AIP Conference Proceedings, 2194(1), Article 020064. https://doi.org/10.1063/1.5139796

Monalisa, C., Ahda, Y., & Fitria, Y. (2019). Critical thinking skill improvement using problem-based learning (PBL) model of 4th grade students of elementary school. International Journal of Science and Research, 8(2), 429-43. https://bit.ly/43UX0ga

Nadeak, B., & Naibaho, L. (2020). The effectiveness of problem - based learning on students' critical thinking. Jurnal Dinamika Pendidikan, 13(1), 1-7. https://bit.ly/4mdkfZm

Oderinu, O. H., Adegbulugbe, I. C., Orenuga, O. O., & Butali, A. (2020). Comparison of students’ perception of problem‐based learning and traditional teaching method in a Nigerian dental school. European Journal of Dental Education, 24(2), 207-212. https://doi.org/10.1111/eje.12486

Palinussa, A. L., Lakusa, J. S., & Moma, L. (2023). Comparison of problem-based learning and discovery learning to improve students’ mathematical critical thinking skills. Formatif Jurnal Ilmiah Pendidikan MIPA, 13(1), 109-122. https://bit.ly/4djAXlZ

Paul, R., & Elder, L. (2004). The nature and functions of critical & creative thinking. The Foundation for Critical Thinking. https://bit.ly/3F5gIM8

Pramestika, N. P. D., Wulandari, I. G. A. A., & Sujana, I. W. (2020). Enhancement of mathematics critical thinking skills through problem-based learning assisted with concrete media. Journal of Education Technology, 4(3), 254-263.https://doi.org/10.23887/jet.v4i3.25552

Putranta, H., & Kuswanto, H. (2018). Improving students’ critical thinking ability using problem- based learning (PBL) learning model based on PhET simulation. SAR Journal, 1(3), 77-87. https://bit.ly/4kCXv3v

Qondias, D., Lasmawan, W., Dantes, N., & Arnyana, I. B. P. (2022). Effectiveness of multicultural problem-based learning models in improving social attitudes and critical thinking skills of elementary school students in thematic instruction. Journal of Education and E-learning Research, 9(2), 62-70. https://doi.org/10.20448/jeelr.v9i2.3812

Rahmadita, N., Mubarok, H., & Prahani, B. K. (2021). Profile of problem-based learning (PBL) model assisted by PhET to improve critical thinking skills of high school students in dynamic electrical materials. Jurnal Penelitian Pendidikan IPA, 7(4), 617-624. https://doi.org/10.29303/jppipa.v7i4.799

Rahmat, M. R., Arip, A. G., & Nur, S. H. (2020). Implementation of problem-based learning model assisted by e-modules on students' critical thinking ability. Jurnal Pendidikan Indonesia, 9(3), 339-346. https://doi.org/10.23887/jpi-undiksha.v9i3.22410

Rahmawati, F., Sarwanto, S., & Budiawanti, S. (2021). Needs analysis of physics e-module based on hybrid - PBL model on critical thinking skills improvement. Momentum: Physics Education Journal, 5(2), 175-181. https://doi.org/10.21067/mpej.v5i2.5740

Ranggi, N. L., Yokhebed, Ramli, M., & Yuliani, H. (2021). Meta-analysis of the effectiveness of problem-based learning towards critical thinking skills in science learning. Journal of Physics: Conference Series, 1842, Article 012071. https://doi.org/10.1088/1742-6596/1842/1/012071

Razak, A. A., Ramdan, M. R., Mahjom, N., Zabit, M. N. M., Muhammad, F., Hussin, M. Y. M., & Abdullah, N. L. (2022). Improving critical thinking skills in teaching through problem-based learning for students: A scoping review. International Journal of Learning, Teaching and Educational Research, 21(2), 342-362. https://doi.org/10.26803/ijlter.21.2.19

Ridho, S., Wardani, S., & Saptono, S. (2021). Development of local wisdom digital books to improve critical thinking skills through problem-based learning. Journal of Innovative Science Education, 10(1), 1-7.  

Saepuloh, D., Sabur, A., Lestari, S., & Mukhlishoh, S. U. (2021). Improving students’ critical thinking and self-efficacy by learning higher order thinking skills through problem-based learning models. Jurnal Pendidikan Indonesia, 10(3), 495-504. https://doi.org/10.23887/jpi-undiksha.v10i3.31029

Sagkal Midilli, T., & Altas, G. (2020). The relationship between critical thinking disposition and problem-solving skills in Nurses. International Journal of Caring Sciences, 13(3), 1890-1897. https://bit.ly/43Tfbmn

Santuthi, P. C. P., Suardana, N., & Wijana, N. (2020, July). The effect of problem-based learning learning model on problem solving and critical thinking ability of class viii students in smpn 1 singaraja of science.  Journal of Physics: Conference Series, 1503, Article 012046. https://doi.org/10.1088/1742-6596/1503/1/012046

Santyasa, I. W., Santyadiputra, G. S., & Juniantari, M. (2019). Problem-based learning model versus direct instruction in achieving critical thinking ability viewed from students’ social attitude in learning physics. In H. Ardi, I. Ifdil, M. A. Arianto, & R. Rahim (Eds.), 1st International Conference on Education Social Sciences and Humanities (ICESSHum 2019) (pp. 633-644). Atlantis Press. https://doi.org/10.2991/icesshum-19.2019.101

Saputra, M. D., Joyoatmojo, S., Wardani, D. K., & Sangka, K. B. (2019). Developing critical-thinking skills through the collaboration of Jigsaw model with problem-based learning model. International Journal of Instruction, 12(1), 1077-1094. https://doi.org/10.29333/iji.2019.12169a

Sarwanto, Fajari, L. E. W., & Chumdari. (2021). Critical thinking skills and their impacts on elementary school students. Malaysian Journal of Learning and Instruction, 18(2), 161-187. https://doi.org/10.32890/mjli2021.18.2.6

Setiawan, H. J., & Islami, N. (2020). Improving critical thinking skills of senior high school students using the problem-based learning model. Journal of Physics: Conference Series, 1655, Article 012060.  https://doi.org/10.1088/1742-6596/1655/1/012060

Sholihah, T. M., & Lastariwati, B. (2020). Problem based learning to increase competence of critical thinking and problem solving. Journal of Education and Learning, 14(1), 148-154.  https://doi.org/10.11591/edulearn.v14i1.13772

Siagian, Q. A., Darhim, D., & Juandi, D. (2023). The effect of cooperative learning models on the students’ mathematical critical and creative thinking ability: Meta-analysis study. Jurnal Cendekia: Jurnal Pendidikan Matematika, 7(1), 969-990. https://doi.org/10.31004/cendekia.v7i1.2281

Silviariza, W. Y., Sumarmi, & Handoyo, B. (2020). Using spatial problem-based learning (SPBL) model in geography education for developing critical thinking skills. Journal for the Education of Gifted Young Scientists, 8(3), 1045-1960. https://bit.ly/43f8rOS

Sunubi, A. H., & Bachtiar, B. (2022). Blended learning method in enhancing students’ critical thinking skills: Challenges and opportunities. AL-ISHLAH: Jurnal Pendidikan, 14(4), 6817-6824. https://doi.org/10.35445/alishlah.v14i4.2163

Supriyadi, A., Desy, Suharyat, Y., Santosa, T. A., & Sofianora, A. (2023). The effectiveness of STEM-integrated blended learning on Indonesia student scientific literacy: A meta-analysis. International Journal of Education and Literature, 2(1), 41-48. https://bit.ly/3S5dX06

Supriyatno, T., Susilawati, S., & Ahdi, H. (2020). E-learning development in improving students’ critical thinking ability. Cypriot Journal of Educational Sciences, 15(5), 1099-1106. https://doi.org/10.18844/cjes.v15i5.5154

Suryono, W., Haryanto, B. B., Santosa, T. A., Rahman, A., Suharyat, Y., & Sappaile, B. I. (2023). The effect of the blended learning model on student critical thinking skill: Meta-analysis. Edumaspul-Jurnal Pendidikan, 7(1), 1386-1397. https://doi.org/10.33487/edumaspul.v7i1.6087

Susilo, B. E., Darhim, D., & Prabawanto, S. (2020). Critical thinking skills based on mathematical dispositions in problem-based learning. Journal of Physics: Conference Series, 1567, Article 022101. https://doi.org/10.1088/1742-6596/1567/2/022101

Uliyandari, M., Candrawati, E., Herawati, A. A., & Latipah, N. (2021). Problem-based learning to improve concept understanding and critical thinking ability of science education undergraduate students. IJORER: International Journal of Recent Educational Research, 2(1), 65-72. https://doi.org/10.46245/ijorer.v2i1.56

Umar, U., Kaharuddin, A., Fauzi, A., Widodo, A., Radiusman, R., & Erfan, M. (2020). A comparative study on critical thinking of mathematical problem-solving using problem based learning and direct instruction. In Proceedings of the 1st Annual Conference on Education and Social Sciences (ACCESS 2019) (pp. 314-316). Atlantis Press. https://doi.org/10.2991/assehr.k.200827.079

Wahyudiati, D. (2022). The critical thinking skills and scientific attitudes of pre-service chemistry teachers through the implementation of problem-based learning model. Jurnal Penelitian Pendidikan IPA, 8(1), 216–221. https://doi.org/10.29303/jppipa.v8i1.1278

Wenno, I. H., Jamaludin, J., & Batlolona, J. R. (2021). The effect of problem-based learning model on creative and critical thinking skills in static fluid topics. Jurnal Pendidikan Sains Indonesia, 9(3), 498-511. https://bit.ly/3H9GAaa

Widyatiningtyas, R., Kusumah, Y. S., Sumarmo, U., & Sabandar, J. (2015). The impact of problem-based learning approach to senior high school students' mathematics critical thinking ability. Indonesian Mathematical Society Journal on Mathematics Education, 6(2), 30-38.

Xu, E., Wang, W., & Wang, Q. (2023). The effectiveness of collaborative problem solving in promoting students’ critical thinking: A meta-analysis based on empirical literature. Humanities and Social Sciences Communications, 10, Article 16. https://doi.org/10.1057/s41599-023-01508-1 

Yennita, Y., & Zukmadini, A. Y. (2021). Problem-based learning (PBL) and blended learning in improving critical thinking skills and student learning activities in biochemistry courses. Journal of Physics: Conference Series, 1731, Article 012007. https://doi.org/10.1088/1742-6596/1731/1/012007

Yolanda, F. (2019). The effect of problem-based learning on mathematical critical thinking skills of junior high school students.  Journal of Physics: Conference Series, 1397(1), Article 012082.
https://doi.org/10.1088/1742-6596/1397/1/012082

Zamroni, E., Muslihati,Lasan, B. B., & Hidayah, N. (2020). Blended learning based on problem-based learning to improve critical thinking ability of prospective counselors. Journal of Physics: Conference Series, 1539, Article 012039.
https://doi.org/10.1088/1742-6596/1539/1/012039

Zuryanty, Kenedi, A. K., Chandra, R., Hamimah, & Fitria, Y. (2019). Problem based learning: a way to improve critical thinking ability of elementary school students on science learning. Journal of Physics: Conference Series, 1424, Article 012037. https://doi.org/10.1088/1742-6596/1424/1/012037