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All Journal Progressive of Cognitive and Ability International Journal of Applied Learning and Research in Algebra
Muhammad Sajjad
King Mongkut's University of Technology Thonburi
Education Mathematics Other

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Analysis of Conceptual Errors of High School Students Class XI Rows and Series Materials Naufal Hilmiy; Lilis Marina Angraini; Muhammad Sajjad
International Journal of Applied Learning and Research in Algebra Vol. 3 No. 2 (2026)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/algebra.v3i2.2021

Abstract

Purpose – This study aimed to analyze conceptual errors made by 11th grade high school students when solving mathematics problems related to sequences and series, as well as to identify the factors that cause these errors. Methodology – The method used is descriptive research with a qualitative approach. The subjects in this study consisted of 33 11th grade students at Pekanbaru State High School, who were selected using purposive sampling. Findings – Data were obtained through written tests and interviews, then analyzed using qualitative descriptive methods. The findings revealed that the most common type of error made by students was procedural errors, followed by errors in operations and conceptual errors. The main causes of these errors were a lack of basic understanding, inaccuracy in selecting and using formulas, and a lack of precision in calculating. Novelty – The novelty of this study lies in its comprehensive analysis of students’ errors—covering conceptual, procedural, and operational aspects of sequences and series—as well as the identification of their underlying causes through a combination of test data and interviews, thereby providing a more in-depth understanding.. Significance – This study is important in providing real insight into the difficulties students face in understanding sequences and series. The results of this study are expected to serve as a reference for teachers in designing better learning methods to improve students' conceptual understanding and learning outcomes.
Cooperative Learning Models as an Innovative Strategy in Biology Lesson Planning: A Literature Review Irda Wahidah Nasution; Nurul Hidayah Nasution; Muhammad Sajjad
Progressive of Cognitive and Ability Vol. 5 No. 1 (2026)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/jpr.v5i1.2465

Abstract

Education has been widely recognized as a key instrument in improving the welfare of people around the world. This aligns with UNESCO's (2020) view, which emphasizes that education is not only a human right but also an investment that generates economic and social benefits. Public perceptions can vary depending on various factors, such as knowledge, educational background, experience, institutional conditions, and government policies. This study employed a qualitative approach. This qualitative literature study approach was used because obtaining facts or social realities in research requires a more in-depth approach, and the researcher believes that truth or social reality is constructed by individual consciousness. To test the validity of the data in this study, source triangulation and theory triangulation techniques were used. Meanwhile, data analysis was carried out in several stages: data collection, data reduction, data presentation, and verification/drawing conclusions. The results of the literature review indicate that education plays a crucial role in improving community welfare through several mechanisms, such as increasing employment opportunities, reducing poverty, and increasing social mobility. The Sambirejo village community recognizes the importance of education, as everyone no longer relies solely on wealth or material assets to survive, but rather on knowledge as the most fundamental asset. Through quality and inclusive education, communities can be better prepared to face social challenges and play an active role in creating positive change for the common good.
Co-Authors Irda Wahidah Nasution Lilis Marina Angraini Naufal Hilmiy Nurul Hidayah Nasution