Group 5 Theoretical Framework
Group 5 Theoretical Framework
This research addresses the persistent solid waste management problem in the Philippines, specifically examining the inadequacies in waste segregation at the municipal level. Households continue to lack comprehension of the need for waste segregation, resulting in no behavioral modifications toward disposal. In the context of Gawad Kalinga communities, despite their Green Kalinga program, concerns persist about drainage clogs and flooding which they vocalized last August 2023, necessitating a comprehensive exploration of alternative initiatives that could effectively disseminate proper segregation. This study aims to contribute insights into refining waste management strategies in the Philippines, aligning with the Sustainable Development Goals and mitigating environmental and health risks.
As of today, the issue regarding improper waste segregation continues to contribute to the country’s fluctuation. SEPO reports that approximately 15% of the estimated 9, 212.02 tons of garbage produced in Metro Manila are eventually dumped into canals, rivers, and the infamous Manila Bay. This event may lead to more crises such as health issues and the production of an immense amount of greenhouse gasses. The relevance of this paper lies in its goal to unearth the repercussions of improper waste disposal on both the scientific and societal fronts. Health is a critical aspect of life, which would deteriorate once there is a buildup of trash in bodies of water and disposal sites. Illnesses one may get from this problem are HIV, Hepatitis B and C, and many more (Chamberlain, 2019). In addition, Bisong et al. mentioned in their study that the organic waste decays in landfills produces greenhouse gasses, one of the air pollutants that cause severe environmental crises. These are the main reasons why this paper is deemed significant with the ongoing challenges in waste management.
Group 5 Theoretical Framework
Group 5 Theoretical Framework
The escalating global waste crisis presents a critical challenge, with the Philippines grappling despite legislative efforts such as the existence of Republic Act No. 9003 mandating ecological solid waste management. (Active Sustainability, N.D.) Existing literature underscores two main gaps: ineffective LGU waste segregation programs due to financial and political constraints, and urban areas struggling with low compliance. (Castillo & Otoma, 2013; Kojima & Michida, 2011) For instance, sanitary landfills to replace garbage dumps cost Php 20M a hectare and 74.14% of the originates from households.
Group 5 Procedural Framework
Group 5 Procedural Framework
This study employs a dependent (paired sample) t-test analysis to determine the significance of differences between pretest and posttest scores, gauging citizen awareness of key waste management facets such as decomposition rate, material, hazard, and environmental urgency. The research focuses on Gawad Kalinga participants, quantifying knowledge levels through mean questionnaire scores measured on a continuous ratio scale. The independent variable involves two related categorical groups, measured on two occasions, ensuring the absence of outliers and adherence to normal distribution assumptions. These measures collectively bolstered the integrity of the chosen t-test methodology. (Laerd Statistics, N.D.) Rejecting the null hypothesis due to disparity, supported by the p-value method, then signifies statistical significance (Hayes, 2023; Vaidya & Srivastav, N.D.). Furthermore, the survey includes a subjective component capturing attitudes and behaviors related to waste segregation as well as environmental zeal that is graphically represented to visualize the distribution and hierarchy of responses among the participants, contributing to a comprehensive analysis of the study’s findings.
The research utilizes a Quasi-Experimental design which aims to investigate the correlation between the independent and dependent variables, but, contrary to normal research, the participants are not randomly selected (Thomas, 2023). This design resembles the group's study because, in the pursuit of enhancing the environmental literacy and sensitivity of the Gawad Kalinga community through the utilization of gamification and visual aids in the lecture, only 15 selected participants were able to attend based on their availability. As stated in this paper, the group's study adopting a Quasi-Experimental design is one of its limitations because non-randomization decreases the validity of the causal relationship between the variables. However, in consideration of the safety of both the student researchers and the participants, the need to communicate with the heads of the school and the Gawad Kalinga community was done.
Group 5 Procedural Framework
Group 5 Procedural Framework
The participants were 15 Gawad Kalinga Nanays, aged 30-85 years old, who were selected through the Convenience sampling method where they were selected based on their availability. Researchers used a pretest-posttest survey questionnaire and face-to-face lecture in Filipino incorporating visual aids and gamification, capturing baseline and post-intervention data, but post-seminar monitoring of waste segregation and household practices is not feasible.
The language used in the discussion and questionnaire they answered is Filipino since the participants understood it better. The researchers will first ask permission from the participants before conducting the research. The group will not force the participants to answer the questionnaire. The answers and results of the participants will remain confidential.
The respondents' existing knowledge regarding waste segregation is primarily measured on the pre-test questionnaires provided. Both tests consist of 28 items with four test types: True or False, Matching Type, Classification, and the Subjective portion that measures their scale of appreciation toward the environment. The highest score from the pre-test results is 17, while the lowest is 3. The GK Nanays' mean score is 10.4, which is only almost 3% of the total correct answers. Acknowledging these results, the researchers understood that the participants had low to average knowledge regarding waste management in the Philippines due to the below-average mean score and low total correct answers of each participant in the provided histogram. As for the impact of the researcher-led lecture, it is evident in the second histogram that the mean post-test scores improved after implementing the interventions prepared by the group. Instead of having 3 as the lowest, this time, 4 out of 28 was the lowest score of the participants. It can also be seen in the graph that most participants reached a score of 19.50, which is a huge improvement since the pre-test results only had 17.50 as the highest. Moreover, the data gathered from the mean scores in the post-test showed that the average increased to 11.46, therefore revealing that the use of lectures, visual aids, and games during a discussion truly helps in retaining a learner's memory and will help in improving the GK nanays' behavior toward waste management.
The research examined Gawad Kalinga members' performance, scoring an average of 10.4000 out of 28 items on the pre-test and then 11.4667 after intervention. Despite the marginal one-point improvement in the post-test mean score, the one-tailed dependent t-test, resulting in a test value of 1.21 with a p-value of 0.123 (p > 0.05) indicated no significant enhancement, reinforcing the the lack of evidence for the assertion of intervention ineffectiveness.
Noteworthy variations in individual outcomes were observed, with two participants achieving the highest individual averages of 17.5 out of 28. Conversely, the eldest participant aged 73 scored the lowest with a 3.5-point average. 60% of participants showed improvement while 40% exhibited stagnant or decreased scores. The findings suggest altering contextual and demographic factors (sample size, environmental setting, time restrictions, conceptual density, and vocabulary aptitude), influencing waste segregation knowledge in educational intervention. Although the overall intervention did not fully achieve its intended goal, the 60% success rate among participants suggests some effectiveness and this can be utilized to alleviate waste pollution that is affecting the health and development of society.
The first teaching method employed is the utilization of visual aids. This was done through the creation of a PowerPoint Presentation that contains all the information needed for the Gawad Kalinga community to better understand the flow of the discussion and the lesson on Waste Segregation. With this, it can be said that the use of visual aids is effective because the participants relied on the PowerPoint Presentation for the interpretation of the questions in the pretest and post-test as well as to enhance their comprehension of the context of the lesson. Moreover, the second teaching method incorporated in the study is gamification. In the lecture, the researchers conducted two games, namely, Bring Me and Category Contest, which both focused on the topic of proper Waste Segregation. From this, based on the shared reflection of the participants, these games helped them to remember the accurate classification of various wastes, thus, contributing to the researchers' pursuit to enrich the environmental knowledge and sensitivity of the participants despite the resulting p-value indicating that the intervention was ineffective.
An unexpected trend emerged as there was no indicative correlation observed between participants' scores and their ages. A scatter plot of individual score averages (y-axis) against age (x-axis) revealed a negative slope. To have a precise claim, the calculation of Pearson's Product Moment Correlation Coefficient or PPME produced a value of -0.6883, indicating a weak negative correlation. This suggests that individuals of all age groups may be equally motivated to educate and discipline themselves in addressing the effects of poor waste management, highlighting a universal concern that transcends age groups Further research could explore the underlying motivations and factors contributing to this phenomenon.
The results of the research will be significant in solving ongoing challenges that involve waste management and if gamification and visual aids are useful in altering the mindset and behavior of GK Nanays. The study will be helpful especially since improper waste segregation causes environmental crises like pollution and health problems. The data can be a tool for researchers in figuring out what to do in order to improve further and solve ongoing problems such as inefficient waste collection.
The study has several major limitations that warrant acknowledgment. First, the small sample size of 15 participants comprising adult and senior women from the urban Gawad Kalinga Community hinders the generalizability of findings to a broader demographic, particularly those living on the poverty threshold. Moreover, the omission of the youth demographic further highlights a limitation in the representation of various age groups within households. Second, the lack of immersion and adequate background on community-specific issues like discipline on community initiatives and language proficiency impedes comprehensive contextual understanding. The absence of post-intervention behavior and lifestyle monitoring complicates accurately assessing the intervention's long-term impact. Lastly, the linguistic disparity between the teaching module and questionnaires, predominantly in English rather than the participants’ mother tongue, Filipino, challenging comprehension for a few. These limitations collectively pose consequential constraints on the research process and the validity of the study's results.
The group has offered five suggestions that will help future researchers further improve this study. First is to immerse themselves in the issues of their chosen community to learn more about their difficulties and behavior toward waste segregation. This will help in creating interventions that are useful for the community. Second, the group advises future studies to contain more setups, involving participants who are from different age groups, which would make the research yield more accurate results. Moreover, the researchers recommend using the random sampling method to reduce bias in selection, which will improve the study’s validity. This will then lead to an expansion of the number of participants, helping the study gain more thorough insights. The members will also request that future researchers produce questionnaires that are easier to understand and that utilize the community’s vernacular language. Lastly, it would be much better if future researchers could lend more time to observe the change in the participants’ behavior after the chosen interventions so that it would be more accurate than this study’s data.
With this awareness, the findings offer influential practical implications. By enhancing the teaching modules, pretest/posttest questionnaires, and incorporating immersion into the methodology, the effectiveness of these educational tools can be strengthened and augment pretest-discussion-posttest outcomes. Refined and optimized tools hold the potential to serve as valuable resources for Local Government Units (LGUs) in addressing the knowledge gaps and compliance issues within their respective barangays through rapport in doing personal intervention, enjoyment in employing gamification, and relatability in adopting visual aids and choice of words. By leveraging these resources, LGUs can empower their Filipino constituents to make informed decisions and effectively contribute to community development and well-being.
With the objective of this research to enhance the waste segregation knowledge and environmental awareness of the Gawad Kalinga community through a research-led educational intervention employing gamification and visual aids, the researchers conducted a pretest and post-test to examine the knowledge of the participants before and after the intervention. From this, a one-tailed dependent t-test statistical analysis of the test scores was conducted that showed that the p-value is 0.123 which is greater than the significant value of 0.05, thus, implying that the research was not successful in enhancing the knowledge of the participants. Despite this, it is still noteworthy to indicate that 60% of the participants had increased scores; however, irregularities are evident in the remaining 40% who had stagnant or decreased scores. With this, gaining evidence from the t-test statistical analysis, the resulting p-value does not fully support the claim that an educational intervention that utilizes gamification and visual aids is effective in improving the knowledge of waste segregation. The irregularities in the results of the pretest and post-test also suggest that the environmental context, language, and content of the test must be altered.
Group 5's collected Documentation
Rofia
“Anghel”
Miguela
“Linabell”
Lerein
"Dawn"
Natalie
“Chanel”
Breanna
“The Reserverist”
Erica
“Rory: Thought Tactician”
About GK New Home. (N.D.). Gawad Kalinga. https://www.gk1world.com/aboutgk
Abdul-Rahman, F. (N.D.). Reduce, Reuse, Recycle: Alternatives for Waste Management: New Mexico State University - BE BOLD. Shape the Future. Reduce, Reuse, Recycle: Alternatives for Waste Management | New Mexico State University - BE BOLD. Shape the Future. https://pubs.nmsu.edu/_g/G314/index.html
Active Sustainability. (N.D.). LANDFILLS: A SERIOUS PROBLEM FOR THE ENVIRONMENT. https://www.activesustainability.com/environment/landfills-serious-problem-environment/?_adin=02021864894
Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50(2), 179–211. https://doi.org/10.1016/0749-5978(91)90020-t
Benosa, S. (N.D.). Filipino Barangays – Leading the Way in Zero Waste Models - GAIA. GAIA. https://www.no-burn.org/filipino-barangays-leading-the-way-in-zero-waste-models/
Bhandari, P. (2023, June 22). Questionnaire Design | Methods, Question Types & Examples. https://www.scribbr.com/methodology/questionnaire/
Bisong, J.O., John, G.E., Inah, S.A., & Omang, D.I.K. (2021). Public health implication of solid waste generated by households in Bekwarra Local Government area. African Health Sciences, 21(3), 1467-1473. https://doi.org/10.4314%2Fahs.v21i3.58
Busch, C., Caponetto, I., Earp, J., & Ott, M. (2014). Gamification ang Education : A Literature Review. In Proceedings of the 8th International Conference on Games Based Learning: ECGBL 2014 (pp. 50–57). Essay, Academic Conferences and Publishing International Limited.
Castillo, A.L., & Otoma, S. (2013). Status of Solid Waste Management in the Philippines. The 24th Annual Conference of Japan Society of Material Cycles and Waste Management, 24, 677-678. https://doi.org/10.14912/jsmcwm.24.0_677
Chamberlain, M. (2019, March 10). Diseases Caused by Improper Healthcare Waste Disposal. Daniels Health. https://www.danielshealth.com/knowledge-center/disease-from-improper-disposal
Chen, J. (2023, July 20). Z-test definition: Its uses in statistics simply explained with example. Investopedia. https://www.investopedia.com/terms/z/z-test.asp
Curley, L. E., Wu, Z., & Svirskis, D. (2018). Using Technology in Pharmacy Education: Pharmacy Student Performance and Perspectives When Visual Aids Are Integrated Into Learning. Frontiers in Pharmacology, 9. https://sci-hub.se/https://www.frontiersin.org/articles/10.3389/fphar.2018.01062/full
De Los Reyes, F. & Limoanco, J. (2012, January 26). Environmental science in service of the poor: The science behind Green Kalinga. Philstar.com. https://www.philstar.com/business/science-and-environment/2012/01/26/770901/environmental-science-service-poor-science-behind-green-kalinga
Dependent T-test using SPSS statistics. Dependent T-Test in SPSS Statistics - The procedure for running the test, generating the output and understanding the output using a relevant example | Laerd Statistics. (n.d.). https://statistics.laerd.com/spss-tutorials/dependent-t-test-using-spss-statistics.php
Esteves, P. (2007). The greening of Gawad Kalinga. Philstar.com. https://www.philstar.com/other-sections/starweek-magazine/2007/11/18/28209/greening-gawad-kalinga
Fogg, B. J. (N.D.). Fogg Behavior Model . http://www-personal.umich.edu/~mrother/KATA_Files/FBM.pdf
Fogg, B. J., & Euchner, J. (2019). Designing for behavior change—new models and moral issues. Research-Technology Management, 62(5), 14–19. https://doi.org/10.1080/08956308.2019.1638490
Gawad Kalinga (GK). (N.D.). Devex. https://www.devex.com/organizations/gawad-kalinga-gk-47275
Glanz, K., Rimer, B., & Viswanath, K. (2015). In HEALTH BEHAVIOR : Theory, Research, and Practice (5th ed., pp. 95–99). Jossey-Bass. Retrieved from https://books.google.com.ph/books?hl=en&lr=&id=9BQWCgAAQBAJ&oi=fnd&pg=PA95&dq=Theory+of+reasoned+action+theory&ots=eeQ6agzNe3&sig=wuFyRv9VNasQsy9MFUPthHT3hr0&redir_esc=y#v=onepage&q=Theory%20of%20reasoned%20action%20theory&f=false.
Green kalinga. (2009). Behance. https://www.behance.net/gallery/358452/Green-Kalinga
Guay, F( 2021,October 27).Canadian Journal of School Psychology.Applying Self-Determination Theory to Education: Regulations Types, Psychological Needs, and Autonomy Supporting Behaviors. 37, 1 https://journals.sagepub.com/doi/10.1177/08295735211055355
Hamari, J., Koivisto, J., & Sarsa, H. (2014). Does gamification work? -- A literature review of empirical studies on Gamification. 2014 47th Hawaii International Conference on System Sciences. https://doi.org/10.1109/hicss.2014.377
Hayes, A. (2023, April 5). T-test: What it is with multiple formulas and when to use them. Investopedia. https://www.investopedia.com/terms/t/t-test.asp
Heidari, A., Kolahi, M., Behravesh, N., Ghorbanyon, M., Ehsanmansh, F., Hashemolhosini, N., & Zanganeh, F. (2018). Youth and sustainable waste management: A SEM approach and extended theory of planned behavior. Journal of Material Cycles and Waste Management, 20(4), 2041–2053. https://doi.org/10.1007/s10163-018-0754-1
Kalyanasundaram, M., Sabde, Y., Annerstedt, K. S., Singh, S., Sahoo, K. C., Parashar, V., Purohit, M., Pathak, A., Lundborg, C. S., Rousta, K., Bolton, K., Atkins, S., & Diwan, V. (2021, April 9). Effects of improved information and volunteer support on segregation of solid waste at the household level in urban settings in Madhya Pradesh, India (I-miss): Protocol of a cluster randomized controlled trial - BMC public health. BioMed Central. https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-021-10693-0
Kojima & Michida. (2011). Chapter 5 Review of the Waste Management System in the Philippines: Initiatives to Promote Waste Segregation and Recycling through Good Governance. NSWAL.org. https://www.nswai.org/docs/Review%20of%20the%20Waste%20Management%20System%20in%20the%20Philippines.pdf
Lalamonan, E. N., & Comighud, S. M. T. (2020). Awareness and Implementation of Solid Waste Management (SWM) Practices. knowledgecenter. https://knowledgecenter.ubt-uni.net/cgi/viewcontent.cgi?article=2860&context=conference
Learnings About Learning Styles. (2022 January 26). Western Governors University. https://www.wgu.edu/blog/learnings-about-learning-styles2201.html#close
Madden, T. J., Ellen, P. S., & Ajzen, I. (1992). A comparison of the theory of planned behavior and the theory of reasoned action. Personality and Social Psychology Bulletin, 18(1), 3–9. https://doi.org/10.1177/0146167292181001
Madigral, D. V., & Oracion, E. G. (2017, December 31). Solid Waste Management Awareness, Attitude, and Practices in a Philippine Catholic Higher Education Institution | Recoletos Multidisciplinary Research Journal. Recoletos Multidisciplinary Research Journal. https://rmrj.usjr.edu.ph/rmrj/index.php/RMRJ/article/view/312
Majuria, J., Koivisto, J., & Hamari, J. (2018). Gamification of education and learning: A review of empirical literature. ISSN 1613-0073 (Online) | CEUR workshop proceedings | The ISSN Portal. https://trepo.tuni.fi/bitstream/handle/10024/104598/gamification_of_education_2018.pdf
Mepieza, R. (2023, April 1). The Power of Ice Breaker Activity: Examining the Impact of Icebreakers on Student Participation and Engagement in the Classroom. 1(1). http://e-science.net/index.php/EJLHSS/article/view/8/7
Mishra, P., Singh, U., Pandey, C., Mishra, P., & Pandey, G. (2019). Application of student’s t-test, analysis of variance, and covariance. Annals of Cardiac Anaesthesia, 22(4), 407. https://doi.org/10.4103/aca.aca_94_19
MSEd Cherry, K. (2022, November 08). How Does Self-Determination Theory Explain Motivation?. Very Well Mind. https://www.verywellmind.com/what-is-self-determination-theory-2795387
Nah, F.FH., Zeng, Q., Telaprolu, V.R., Ayyappa, A.P., Eschenbrenner, B. (2014). Gamification of Education: A Review of Literature. In: Nah, F.FH. (eds) HCI in Business. HCIB 2014. Lecture Notes in Computer Science, vol 8527. Springer, Cham. https://doi.org/10.1007/978-3-319-07293-7_39
Nathanson, J. (N.D.). Remedial action. Encyclopædia Britannica. https://www.britannica.com/technology/hazardous-waste-management/Remedial-action
Neideen, T. & Brasel, K. (2007). Understanding statistical tests. Journal of Surgical Education, 64(2), 93–96. https://doi.org/10.1016/j.jsurg.2007.02.001
Papp, T. (2017, September). Gamification Effects on Motivation and Learning: Application to Primary and College Students. International Journal for Cross-Disciplinary Subjects in Education (IJCDSE), 8(3). https://infonomics-society.org/wp-content/uploads/ijcdse/published-papers/volume-8-2017/Gamification-Effects-on-Motivation-and-Learning.pdf
Pew Research Center. (N.D.). Writing Survey Questions. https://www.pewresearch.org/our-methods/u-s-surveys/writing-survey-questions/
Philippine News Agency. (2022, May 30). Solid waste segregation remains major challenge in PH: DENR chief. https://www.pna.gov.ph/articles/1175460
Pongrácz, E., Phillips, P., & Keiski, R. (2004, June). Evolving the theory of waste management-implications to waste minimization. Research Gate. https://www.researchgate.net/publication/229015605_Evolving_the_Theory_of_Waste_Management-Implications_to_waste_minimization
Price, P.C., Jhangiani, R., & Chiang, I.A. (2020). Research Methods in Psychology – 2nd Canadian Edition. https://opentextbc.ca/researchmethods/
Qualtrics. (N.D.). What is survey research? https://www.qualtrics.com/experience-management/research/survey-research/
Qu, D., Shevchenko, T., Esfandabadi, Z., & Ranjbari, M. (2023, January 13). College Students' Attitude towards Waste Separation and Recovery on Campus. MDPI. https://www.mdpi.com/2071-1050/15/2/1620
Rahman, F., Khalil, J., Jumani, N., Ajmal, M., Malik, S. and Sharif, M. (2011). Impact of Discussion Method on Students Performance. International Journal of Business and Social Science, 2(7), https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=4483e1e83dc033ccfd756184736a533eadc891ee
Raiyn, J. (2016). The Role of Visual Learning in Improving Students’ High-Order Thinking Skills. 7. https://files.eric.ed.gov/fulltext/EJ1112894.pdf
R Core Team (2021). R: A Language and environment for statistical computing. (Version 4.1) [Computer software]. Retrieved from https://cran.r-project.org. (R packages retrieved from MRAN snapshot 2022-01-01).
Republic Act No. 9003 | GOVPH. (2001, January 26). Official Gazette of the Republic of the Philippines. https://www.officialgazette.gov.ph/2001/01/26/republic-act-no-9003-s-2001/#:~:text=AN%20ACT%20PROVIDING%20FOR%20AN,CHAPTER%20I
Reyes, M.A.LL. (2023, February 4). Worsening garbage problem. PhilStar Global. https://www.philstar.com/business/2023/02/04/2242354/worsening-garbage-problem
Ryan, R. M. & Deci, E. L. (2000). Intrinsic and extrinsic motivations: Classic definitions and New Directions. Contemporary Educational Psychology, 25(1), 54–67. https://doi.org/10.1006/ceps.1999.1020
Sailer. M., Hense. J., Mayr. S., & Mandl. H. (2016, December 23). How gamification motivates: An experimental study of the effects of specific game design elements on psychological need satisfaction. Computers in Human Behavior. 69,371-380. https://www.sciencedirect.com/science/article/pii/S074756321630855X
Shabiralyani, G., Hasan, K. S. H., Hamad, N., & Iqbal, N. (2015). Impact of Visual Aids in Enhancing the Learning Process Case Research: District Dera Ghazi Khan. Journal of Education and Practice, 6(19). https://files.eric.ed.gov/fulltext/EJ1079541.pdf
Sof, M. A. (2017). The effectiveness of audio visual aids in teaching learning process at university level. International Journal of Academic Research and Development, 2(4), 271–272. https://www.multidisciplinaryjournal.in/assets/archives/2017/vol2issue4/2-4-34-533.pdf
Sphero Team. (2020, December 08). 4 Types of Learning Styles: Explaining the VARK Model. Sphero. https://sphero.com/blogs/news/learning-styles-for-kids
Stott , A., & Neustaedter, C. (N.D.). Analysis of Gamification in Education. School of Interactive Arts and Technology, Simon Fraser University. http://clab.iat.sfu.ca/pubs/Stott-Gamification.pdf?source=post_page
The jamovi project (2022). jamovi. (Version 2.3) [Computer Software]. Retrieved from https://www.jamovi.org.
The T-test. JMP. (N.D.). https://www.jmp.com/en_us/statistics-knowledge-portal/t-test.html
Thomas, L. (2023, June 22). Cross-Sectional Study | Definition, Uses & Examples. https://www.scribbr.com/methodology/cross-sectional-study/
Toledo, F. P., Devincenzi, S., Kwecko, V., Mota, F. P., & Botelho, S. S. (2018). A framework for modeling persuasive technologies based on the fogg behavior model. 2018 IEEE Frontiers in Education Conference (FIE). https://doi.org/10.1109/fie.2018.8659195
Understanding Waste Segregation: Wet Waste vs Dry Waste. (2019, May 30). Pressure Works https://pressureworks.com.au/2019/05/30/waste-segregation-wet-dry-waste/
Vaidya, D. (N.D.). Z-test - definition, formula, example, calculation, interpretation. https://www.wallstreetmojo.com/z-test/
Vaidya, D., & Srivastav, A. K. (N.D.). T-test - meaning, types, examples, formula, calculation - wallstreetmojo. Wallstreetmojo . https://www.wallstreetmojo.com/t-test/
Varitronics, LLC. (2021, May 13). The importance of visual aids in teaching. VariQuest. https://info.variquest.com/blog/the-importance-of-visual-aids-in-teaching
Whiteman, A., Webster, M., & Wilson, D. C. (2021). The nine development bands: A conceptual framework and global theory for waste and development. Waste Management & Research: The Journal for a Sustainable Circular Economy, 39(10), 1218–1236. https://doi.org/10.1177/0734242x211035926
Xu, L., Ling, M., Lu, Y., & Shen, M. (2017). Understanding household waste separation behaviour: Testing the roles of moral, past experience, and perceived policy effectiveness within the theory of planned behaviour. Sustainability, 9(4), 625. https://doi.org/10.3390/su9040625
Zou, K.H., Fielding, J.R., Silverman, S.G., & Tempany, C.M. (2003). Hypothesis testing I: Proportions. Radiology, 226(3), 609–613. https://doi.org/10.1148/radiol.2263011500