EFFECTIVENESS OF PEER-LED TEAM LEARNING IN IMPROVING 10TH GRADE STUDENTS’ LEARNING OUTCOMES IN CHEMICAL REACTIONS

Abstract

This article analyzes the effectiveness of the implementation of the Peer-Led Team Learning (PLTL) cooperative learning model in improving the learning outcomes of 10th grade students in the topic of chemical reactions at the Dom Martinho da Costa Lopes public general secondary school, Balibo Five Branch, 2026 school year. The study was developed with 17 students from class CT1 and used the observation sheet, the learning outcomes test (TRE) and the questionnaire as instruments. Data analysis was carried out using quantitative descriptive analysis techniques. The results showed high levels of agreement in the evaluation of the instruments, with PA(01)=98.3% and PA(02)=99.16%. There was also an improvement between the evaluation moments, with a proportion of 0.38 in T1 and 0.93 in T2. In the questionnaire, 88% of the students declared to be very happy and 12% happy with the teaching and learning process, 71% had a very favorable opinion, 29% favorable to the use of the PLTL and 76% showed to be very interested in the implementation of the model. Regarding the use of the Portuguese and Tetum languages, 76% considered it easier to understand while 12% indicated sufficient understanding, 6% have little difficulty understanding and 6% have high difficulty understanding. The results indicate that the implementation of the PLTL was associated with improvements in learning outcomes and positive perceptions of the students about the educational process.

ABSTRAK

Artikel ini menganalisis efektivitas penerapan model pembelajaran kooperatif Peer-Led Team Learning (PLTL) dalam meningkatkan hasil pembelajaran siswa kelas 10 dalam topik reaksi kimia di sekolah menengah umum umum Dom Martinho da Costa Lopes, Balibo Five Branch, tahun ajaran 2026. Studi ini dikembangkan dengan 17 siswa dari kelas CT1 dan menggunakan lembar observasi, tes hasil pembelajaran (TRE), dan kuesioner sebagai instrumen. Analisis data dilakukan menggunakan teknik analisis deskriptif kuantitatif. Hasilnya menunjukkan tingkat kesepakatan yang tinggi dalam evaluasi instrumen, dengan PA(01)=98,3% dan PA(02)=99,16%. Ada juga peningkatan antara momen evaluasi, dengan proporsi 0,38 pada T1 dan 0,93 pada T2. Dalam kuesioner, 88% siswa menyatakan sangat senang dan 12% puas dengan proses pengajaran dan pembelajaran, 71% memiliki pendapat sangat positif, 29% mendukung penggunaan PLTL dan 76% menunjukkan minat besar terhadap penerapan model tersebut. Mengenai penggunaan bahasa Portugis dan Tetum, 76% menganggapnya lebih mudah dipahami sementara 12% menyatakan pemahaman yang cukup, 6% mengalami kesulitan yang kecil dan 6% mengalami kesulitan tinggi untuk memahami. Hasilnya menunjukkan bahwa pelaksanaan PLTL dikaitkan dengan peningkatan hasil pembelajaran dan persepsi positif siswa terhadap proses pendidikan.