DEVELOPMENT OF A PROJECT-BASED LEARNING-STEM TEACHING MODULE ON MATHEMATICAL PROBLEM-SOLVING SKILLS RELATED TO PROFIT AND LOSS THROUGH A NATURAL COMPOSTING PROJECT

Sayuk Yuliansah; Wahyu  Lestari; Eka Rahayu

doi:10.37478/jupika.v9i1.7806

Authors

Sayuk Yuliansah Department of Mathematics Education, Zainul Hasan Genggong Islamic University, Probolinggo, Indonesia
Wahyu Lestari Department of Mathematics Education, Zainul Hasan Genggong Islamic University, Probolinggo, Indonesia
Eka Rahayu Department of Mathematics Education, Zainul Hasan Genggong Islamic University, Probolinggo, Indonesia

DOI:

https://doi.org/10.37478/jupika.v9i1.7806

Abstract

This study focuses on the development of instructional materials in the form of modules that adopt a Project-Based Learning–STEM framework. The main topic is centred on social mathematics, specifically profit and loss, contextualized through the task of making organic compost. Additionally, this research aims to evaluate the quality of the product based on indicators of validity, practicality, and its effectiveness in fostering mathematical problem-solving skills. The methodology applied is Research and Development, following the ADDIE model, which is executed in stages, from initial needs assessment to final quality verification. This study was conducted at SMP Islam Irsyadul Mubtadi’in, involving 17 seventh-grade students. Data collection relied on expert validation instruments, student perception questionnaires, and competency evaluations. Through descriptive statistical techniques, the results of the analysis showed that the designed media achieved a validity score of 88.3%, a practicality score of 78.15%, and a learning achievement rate of 80%. Thus, this tool is deemed to meet the criteria as a reliable and innovative teaching material to support student performance in solving mathematical problems in social arithmetic.

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Keywords:

Problem-Solving Skills, Project-Based Learning, Social Arithmetic, STEM, Teaching Modules

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