Contextualized Learning Packet Anchored in the Tuba-Making: Effects on Engagement and Conceptual Understanding of Chemical Reactions among Challenged Learners

Tuba making, a traditional Filipino coconut wine, was integrated into the development of a contextualized learning packet on chemical reactions. This study investigated the effectiveness of the developed learning packet anchored in the tuba-making process on the engagement level and conceptual understanding of chemical reactions among academically challenged Grade 10 learners through a pretest-posttest quasi-experimental research design. The Wilcoxon signed-rank test result revealed that the engagement level of the learners significantly improved after the intervention (p=.000-.001, r=0.60-.075). In terms of conceptual understanding, the pretest scores were comparable among the groups. After using the contextualized learning packet, the posttest scores demonstrated a substantial improvement in both experimental groups compared to the control group. The data was found to be non-normally distributed through the Shapiro-Wilk test and non-parametric tests were employed. The Wilcoxon signed-rank test confirmed the statistically significant improvements within the group (p=.000-.003), with a large effect size. Kruskal-Wallis analysis demonstrated significant differences among the groups (H=15.491, p=.000). The post-hoc comparisons showed that the experimental groups outperformed the control group. No significant difference was observed in the two experimental groups. The contextualized learning packet was highly acceptable and highly usable in terms of its alignment with curriculum standards, appropriateness to learners’ understanding, and effectiveness in explaining chemical reactions, particularly through tuba making. However, minor improvements may be done to the organization of the activities and accommodation of the material to the diverse needs of the students.

Contextualized Teaching, Chemical Reactions, Learning Packets, Tuba Wine-making

1. Acido, J. V., & Caballes, D. G. (2024). Assessing educational progress: A comparative analysis of PISA results (2018 vs. 2022) and HDI correlation in the Philippines. World Journal of Advanced Research and Reviews. Retrieved from https://wjarr.com/content/assessing-educational-progress-comparative-analysis-pisa-results-2018-vs-2022-and-hdi [Google Scholar] [Crossref]

2. Agaton, S. G. (2022). The Tuba Culture in Leyte, Philippines. Recoletos Multidisciplinary Research Journal. Retrieved from https://rmrj.usjr.edu.ph/rmrj/index.php/RMRJ/article/view/1130 [Google Scholar] [Crossref]

3. Agwu, U., & Nmadu, J. (2023). Students’ interactive engagement, academic achievement and self concept in chemistry: An evaluation of cooperative learning pedagogy. Chemistry Education Research and Practice. Retrieved from https://doi.org/10.1039/D2RP00148A [Google Scholar] [Crossref]

4. Barrun, J., & Cajurao, E. (2025). Development and validation of contextualized lessons in science, technology, and society (STS): Impacts on students’ conceptual understanding, science process skills, and attitudes toward science. Pegem Journal of Education and Instruction. Retrieved from https://doi.org/10.47750/pegegog.15.02.04 [Google Scholar] [Crossref]

5. Bertozzi, C. R. (2015). The centrality of chemistry. ACS Central Science. Retrieved from https://doi.org/10.1021/acscentsci.5b00090 [Google Scholar] [Crossref]

6. Demelash, M., Andargie, D., & Belachew, W. (2024). Enhancing secondary school students’ engagement in chemistry through 7E context‑based instructional strategy supported with simulation. Pedagogical Research. Retrieved from https://www.pedagogicalresearch.com/article/enhancing-secondary-school-students-engagement-in-chemistry-through-7e-context-based-instructional-14146 [Google Scholar] [Crossref]

7. Department of Education. (2015). DepEd Order No. 8, s. 2015: Policy Guidelines on Classroom Assessment for the K to 12 Basic Education Program. Retrieved from https://www.deped.gov.ph/wp-content/uploads/2015/04/DO_s2015_08.pdf [Google Scholar] [Crossref]

8. Department of Education Region VIII. (2022). Research bulletin: April to June 2022 (Vol. 4, No. 1). Department of Education Region VIII. Retrieved from https://region8.deped.gov.ph/wp-content/uploads/2023/06/Q2-RB_22.pdf [Google Scholar] [Crossref]

9. Domato, S. A., Salic‑Hairulla, M., Dinoro, A., Salazar, D. A., & Adamat, L. A. (2024). Development of contextualized learning activity packets in biodiversity for Grade 10 learners. International Journal of Research and Innovation in Social Science (IJRISS). Retrieved from https://dx.doi.org/10.47772/IJRISS.2024.806166 [Google Scholar] [Crossref]

10. Ferri, J. K., & White, R. (2024). Culturally relevant STEM (CReST): An integrated support curriculum for high school chemistry and world history. Education Sciences. Retrieved from https://doi.org/10.3390/educsci14020182 [Google Scholar] [Crossref]

11. Garingo, A. C., & Cajucom, E. L. (2022). Challenges of junior high school chemistry learners in an enriched virtual mode. International Multidisciplinary Research Journal. Retrieved from https://www.ioer-imrj.com/wp-content/uploads/2023/03/Challenges-of-Junior-High-School-Chemistry-Learners-in-an-Enriched-Virtual-Mode.pdf [Google Scholar] [Crossref]

12. Gecolea, C., & Amon, M. E. (2019). The use of contextualized activities on acquisition of chemistry concepts in science. International Journal of Research in STEM Education. Retrieved from https://jurnal-fkip.ut.ac.id/index.php/ijrse/index [Google Scholar] [Crossref]

13. Germo, L. P. (2020). Community-based development plan for small-scale processing of coconut wine (Tuba) in Matalom, Leyte. The University Library, University of the Philippines Los Banos. Retrieved from https://www.ukdr.uplb.edu.ph/etd-undergrad/10761/ [Google Scholar] [Crossref]

14. Gregorio, C., Yu, K., Singson, F., Alas, C., & Balbuena, J. (2020). Towards the establishment of baseline scientific information based on the volatile organic compounds (VOCs) of Philippine traditional alcoholic beverages. The Philippine Journal of Science. Retrieved from https://doi.org/10.56899/149.3A.14 [Google Scholar] [Crossref]

15. Hadji Said, M. G., Oledan, A., Buan, A. T., Luga, M. F., & Saromines, C. C. (2024). Development of contextualized learning packet in inequalities in triangle for Grade 8 learners. International Journal of Scientific Engineering and Science. Retrieved from http://ijses.com/wp-content/uploads/2024/06/146-IJSES-V8N5.pdf [Google Scholar] [Crossref]

16. Ho, K., Luong, Y., Sherwood, C., & Clark, D. B. (2024). Widening university participation in learning using students’ contextualised storytelling in general chemistry. Royal Society of Chemistry. Retrieved from https://pubs.rsc.org/en/content/articlelanding/2024/rp/d4rp00084f/unauth [Google Scholar] [Crossref]

17. Jariun, A. S., Nabua, E. B., Salic-Hairulla, M. A., Alcopra, A. R., & Fernandez, M. F. (2025). Learners’ mastery of competencies in chemical reaction. International Journal of Research and Innovation in Social Science. Retrieved from https://dx.doi.org/10.47772/IJRISS.2025.905000138 [Google Scholar] [Crossref]

18. Kausar, F. N., Ghazala, N., & Haroon, A. (2022). Causes of students' learning difficulties in secondary school chemistry: A study in context of content and assessment strategies. Journal of Positive School Psychology. Retrieved from https://www.researchgate.net/publication/378359674 Causes Of_Students'_Learning_Difficulties In_Secondary School Chemistry_A_Study In Context Of_Content_And_Assessment_Strategies [Google Scholar] [Crossref]

19. Khadka, N., Acharya, D., Dangal, A., Rai, K., Gurung, G., Sherma, G., … Gautam, N. (2024). Study on the changes during the fermentation of the wine prepared from palm (Phoenix sylvestris) sap. Heliyon. Retrieved from https://doi.org/10.1016/j.heliyon.2024.e35799 [Google Scholar] [Crossref]

20. Li, M., Wang, Y., Stone, H. N., & Turki, N. (2021). Teaching introductory chemistry online: The application of socio-cognitive theories to improve students’ learning outcomes. Multidisciplinary Digital Publishing Institute. Retrieved from https://doi.org/10.3390/educsci11030095 [Google Scholar] [Crossref]

21. Madrid, L. M., Balawag, L. R. A., & Franca, G. C. (2025). Perceived reading comprehension difficulties and academic performance of intermediate learners. Asian Journal of Education and Social Studies, 51(6), 1373–1381. Retrieved from https://doi.org/10.9734/ajess/2025/v51i62082 [Google Scholar] [Crossref]

22. Majid, A. N., & Rahaeti, E. (2018). The effect of context-based chemistry learning on student achievement and attitude. American Journal of Educational Research. Retrieved from https://pubs.sciepub.com/education/6/6/37/index.html [Google Scholar] [Crossref]

23. Malagday, J. A., Bacolod, D. B., & Gara, M. E. (2024). Modular chemistry instruction enhanced by contextualized teaching videos: A new approach to science education. Journal of Southwest Jiaotong University. Retrieved from https://doi.org/10.35741/issn.0258-2724.59.5.18 [Google Scholar] [Crossref]

24. Mandal, M. (2023). A brief about chemistry: An importance and scope. Journal of Emerging Technologies and Innovative Research. Retrieved from https://www.jetir.org/papers/JETIR2302213.pdf [Google Scholar] [Crossref]

25. Mangarin, R. A., & Macayana, L. B. (2025). Why schools lack laboratory and equipment in science? Through the lense of research studies. International Journal of Research and Innovation in Social Science. Retrieved from https://dx.doi.org/10.47772/IJRISS.2024.8100238 [Google Scholar] [Crossref]

26. Manseguiao, A. S., Salic-Hairulla, M. A., Salazar, D. A., Dinoro, A. P., & Adamat, L. A. (2025). Development of contextualized learning packets in ecosystem for Grade 7 learners. International Journal of Research and Innovation in Social Science (IJRISS). Retrieved from https://dx.doi.org/10.47772/IJRISS.2024.8120223 [Google Scholar] [Crossref]

27. Melgar, F., Leyva, A., Utrilla, J., & Beristain, G. (2019). Bacterial diversity and population dynamics during the fermentation of palm wine from Guerrero Mexico. Frontiers in Microbiology. Retrieved from https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2019.00531/full [Google Scholar] [Crossref]

28. Moju, M., Taylor, L., & Iweuno, B. (2025). Tackling the challenge of chemical representations through sensemaking practices in chemistry education. Discover Education. Retrieved from https://link.springer.com/article/10.1007/s44217-025-00703-3 [Google Scholar] [Crossref]

29. Mundy, C. E., & Nokeri, B. K. (2024). Investigating the effects of a context-based laboratory exercise for meaningful learning. Journal of Chemical Education. Retrieved from https://pubs.acs.org/doi/10.1021/acs.jchemed.3c01260 [Google Scholar] [Crossref]

30. Nahm, F. S. (2016). Nonparametric statistical tests for the continuous data: The basic concept and the practical use. PubMed. Retrieved from https://doi.org/10.4097/kjae.2016.69.1.8 [Google Scholar] [Crossref]

31. OECD. (2023). PISA 2022 results (Volume I and II) - Country notes: Philippines. Retrieved from https://www.oecd.org/en/publications/pisa-2022-results-volume-i-and-ii-country-notes_ed6fbcc5-en/ philippinesa0882a2d-en.html#:~:text=In%20the%20Philippines%2C%2036% 25%20of,mathematics%20was%20344%20score%20points [Google Scholar] [Crossref]

32. Ongy, E. E., & Molleno, G. L. (2024). Optimizing profit from coconut sap-based products at different investment levels. Science and Humanities Journal, 20, 30–56. Retrieved from https://shj.vsu.edu.ph/wp-content/uploads/2025/01/3-Optimizing-Profit-from-SAP-Vol20_3.pdf [Google Scholar] [Crossref]

33. Ongy, E., & Molleno, G. L. (2025). Optimizing profit from coconut sap-based products at different investment levels. Science and Humanities Journal. Retrieved from https://www.researchgate.net/publication/388862187_Optimizing_Profit_from_Coconut_Sap-based_Products_at_Different_Investment_Levels [Google Scholar] [Crossref]

34. Orcan, F. (2020). Parametric or non-parametric: Skewness to test normality for mean. International Journal of Assessment Tools in Education. Retrieved from https://dergipark.org.tr/en/download/article-file/1096261 [Google Scholar] [Crossref]

35. Ortencio, F., Golangayan, K., Fuyonan, P., Dosado, E. G., Agallas, J. P., Mecida, S. V., … Meriales, L. C. (2025). Learning challenges and coping strategies in chemistry among STEM and non-STEM students in the Bachelor of Secondary Education major in Science (BSEd-Science) program: A phenomenological study. ASEAN Journal for Science Education. Retrieved from https://ejournal.bumipublikasinusantara.id/index.php/ajsed [Google Scholar] [Crossref]

36. Pratomo, H., Fitriyana, N., Wiyarsi, A., & Marfuatun, M. (2025). Mapping chemistry learning difficulties of secondary school students: A cross-grade study. Journal of Education and Learning. Retrieved from https://edulearn.intelektual.org/index.php/EduLearn/article/view/21826/10755 [Google Scholar] [Crossref]

37. Ramli, R. Z., Jamion, N., & Ahmad, T. S. (2025). A usability and motivation analysis of laboratory manuals for empowering non-science students in chemistry. International Journal of Research and Innovation in Social Science. Retrieved from https://rsisinternational.org/journals/ijriss/articles/a-usability-and-motivation-analysis-of-laboratory-manuals-for-empowering-non-science-students-in-chemistry/ [Google Scholar] [Crossref]

38. Reid, J. W., Gunes, Z. K., Fateh, S., Fatima, A., Shuck, M., Nenning, H. T., … Talanquer, V. (2022). Investigating patterns of student engagement during collaborative activities in undergraduate chemistry courses. Royal Society of Chemistry. Retrieved from https://doi.org/10.1039/D1RP00227A [Google Scholar] [Crossref]

39. Salamat, R. (2024). Effect of contextualized-based e-learning modules in Chemistry 10 on student's conceptual understanding. Social Science Exploration (Psychology, Education and Multidisciplinary Perspectives). Retrieved from https://scimatic.org/show_manuscript/2920 [Google Scholar] [Crossref]

40. Saraiva, A., Carrascosa, C., Ramos, F., Raheem, D., Lopes, M., & Raposo, A. (2023). Coconut sugar: Chemical analysis and nutritional profile; health impacts; safety and quality control; food industry applications. PubMed. Retrieved from https://pmc.ncbi.nlm.nih.gov/articles/PMC9964017/ [Google Scholar] [Crossref]

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