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Abstract
This research aimed to develop Student Worksheets based on STEM using a Problem-Based Learning (PBL) approach to enhance students' science process skills and critical thinking abilities in science learning at junior high school SMP Abadi Perkasa. The development model used is ADDIE, which includes five stages: Analysis, Design, Development, Implementation, and Evaluation. Product validation was conducted by experts in language, content, and media, demonstrating good reliability with a Cronbach’s Alpha value of ≥ 0.7. The implementation of the Student Worksheets was carried out with Grade IX students at SMP Abadi Perkasa, and the trials showed a significant improvement in students' skills. The N-gain analysis results reached an average of 0.56, categorized as "moderate," indicating an improvement in students' science process skills and critical thinking abilities. Student response questionnaire data indicated the effectiveness of the Student Worksheets, with an average score of 3.56 and an effectiveness percentage of 89.1%, falling into the "effective" category. The findings of this study suggest that the application of STEM-based Student Worksheets with a PBL approach positively impacts science learning, particularly in the topic of dynamic electricity, by enhancing students' science process skills and critical thinking abilities through a more contextual and interactive learning approach.
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Copyright (c) 2024 Budiyatno, Nyoto Suseno, Arif Rahman Aththibby

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This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
References
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- Branch, R. M. (2009). Instructional Design: The ADDIE Approach. New York: Springer.
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- Margot, K. C., & Kettler, T. (2019). Teachers’ Perception of STEM Integration and Education: A Systematic Literature Review. International Journal of STEM Education, 6(1), 1-15.
- Putra, R. W., & Sulaeman, U. (2021). Pembelajaran STEM dalam Pendidikan Sains. Jurnal Pendidikan Sains Indonesia, 9(2), 123-130.
- Redhana, I. W. (2010). Pengembangan Kemampuan Berpikir Kritis melalui Pembelajaran Sains Berbasis Inquiry. Jurnal Pendidikan Indonesia, 1(1), 45-55.
- Sugiyono. (2017). Statistika untuk Penelitian. Bandung: Alfabeta.
- Sutrisno, A. (2023). Pendidikan dan pembangunan ekonomi: Membangun kreativitas dan daya saing siswa. Jurnal Pendidikan Ekonomi, 15(1), 12–20.
- Williams, J. P. (2011). STEM Education: Proceed with Caution. Design and Technology Education: An International Journal, 16(1), 26-35.
- Widowati, M., Waluyo, E., & Suliswiyadi. (2021). The Effect of STEM-Based Learning on Students' Critical Thinking Skills. Jurnal Pendidikan IPA Indonesia, 10(1), 112-120.
References
Arikunto, S. (2013). Prosedur Penelitian: Suatu Pendekatan Praktik. Jakarta: Rineka Cipta.
Branch, R. M. (2009). Instructional Design: The ADDIE Approach. New York: Springer.
Corlu, M. S., Capraro, R. M., & Capraro, M. M. (2014). Introducing STEM Education: Implications for Educating Our Teachers for the Age of Innovation. Education and Science, 39(171), 74-85.
Hastuti, E. (2013). Pendidikan sains untuk mengembangkan kemampuan berpikir kritis siswa di tingkat SMP. Jurnal Pendidikan Sains, 10(2), 45–52.
Herschbach, D. R. (2011). The STEM Initiative: Constraints and Challenges. Journal of STEM Education: Innovations and Research, 12(5/6), 78-89.
Lumbantobing, D., Suryani, N., & Mulyati, E. (2019). Efektivitas Penggunaan LKPD Berbasis STEM Terhadap Kemampuan Berpikir Kritis. Jurnal Pendidikan Sains Indonesia, 7(1), 41-50.
Margot, K. C., & Kettler, T. (2019). Teachers’ Perception of STEM Integration and Education: A Systematic Literature Review. International Journal of STEM Education, 6(1), 1-15.
Putra, R. W., & Sulaeman, U. (2021). Pembelajaran STEM dalam Pendidikan Sains. Jurnal Pendidikan Sains Indonesia, 9(2), 123-130.
Redhana, I. W. (2010). Pengembangan Kemampuan Berpikir Kritis melalui Pembelajaran Sains Berbasis Inquiry. Jurnal Pendidikan Indonesia, 1(1), 45-55.
Sugiyono. (2017). Statistika untuk Penelitian. Bandung: Alfabeta.
Sutrisno, A. (2023). Pendidikan dan pembangunan ekonomi: Membangun kreativitas dan daya saing siswa. Jurnal Pendidikan Ekonomi, 15(1), 12–20.
Williams, J. P. (2011). STEM Education: Proceed with Caution. Design and Technology Education: An International Journal, 16(1), 26-35.
Widowati, M., Waluyo, E., & Suliswiyadi. (2021). The Effect of STEM-Based Learning on Students' Critical Thinking Skills. Jurnal Pendidikan IPA Indonesia, 10(1), 112-120.