Implementation of Problem-Based Learning Model to Increase Self-Confidence and Undergraduate Students Understanding of the Electrochemistry Concept in Chemical Education

Abstract

Chemistry is one of the scientific disciplines considered difficult for students to understand its microscopic and macroscopic concepts. Students also claim that this discipline is tedious and complicated. They are unable to connect what is shown in the visual structure to the process and phenomenon. In the context of self-motivation among university students, there is a higher chance of expanding the stimulation of learning. This study aimed to improve self-confidence and the mastery of concepts of chemistry teaching students using problem-based learning. The quasi-experimental method was used with the design of the non-equivalent pre-test-post-test control group. The population included all students in the electrochemistry class at Lampung University in 2019. The purposeful sampling technique employed divided the sample into two groups. The first group was called Class A and was considered as the experimental class - using problem-based learning -. The second group, Class B, was recognized as the control class - using the conventional model in which the teacher applied the speech method in the delivery of materials during the class -. Class A's self-confidence and mastery of concepts have a higher nGain value than class B, and the result of the effect size is that class B has a more significant effect than class A. Based on the outcome, one can conclude that problem-based learning has a significant influence on improving self-confidence and mastery of concepts on the electrochemical theme.

Memperkuat Kemampuan Siswa melalui Model Problem Based Learning dalam Menulis Teks Diskusi

“…Problem Based Learning (PBL) adalah model pembelajaran yang kontekstual dan menggunakan permasalahan sebagai tujuan utama pembelajaran (Amin et al, 2020;Rudibyani, 2020). PBL memiliki keunggulan dalam mengembangkan keterampilan berpikir kritis karena melibatkan pemikiran analitis dan proses berpikir yang lebih kompleks (Lobo, 2016;Simarmata, 2022).…”

Pengaruh Model Pembelajaran Berbasis Masalah Terhadap Kemampuan Literasi, Berfikir Kritis Pada Mata Pelajaran Bahasa Indonesia

“…Dengan demikian, penelitian ini bukan hanya akan memberikan sumbangan terhadap dunia pendidikan, tetapi juga dapat menginspirasi pengembangan metode pembelajaran yang lebih efektif dan relevan di masa yang akan datang Pendekatan PBL (Problem-Based Learning) telah lama dikenal dalam dunia pendidikan sebagai suatu metode yang berfokus pada pengalaman belajar yang aktif dan kolaboratif (Audrey et al, 2019;Rudibyani, 2020;Simarmata, 2022). Dalam metode ini, siswa dihadapkan pada situasi atau masalah dunia nyata yang memerlukan pemecahan melalui analisis mendalam, diskusi, dan penelusuran informasi.…”

Optimizing Problem-Solving Skills in First Grade: A Project-Based Learning Model Enhanced by Lesson Study at Sekolah Dasar Unggulan Hamzanwadi

“…The PBL model involves learners in group work, provides feedback, and encourages students to be more active in learning, so they can develop critical thinking skills and achieve better learning outcomes. This PBL model starts by presenting real-life problems, giving students the opportunity to conduct out-of-school investigations related to learning problems (Audrey et al, 2019;Nasri et al, 2021;Rudibyani, 2020;Simarmata, 2022).…”