Tina Khairunnisa, 0404520007 (2023) Implementation of Project-Based Learning Using Chitosan-Based Bioplastic Products on Understanding the Concept of Polymer Materials and Developing Conservation Character in Students. Masters thesis, UNNES.

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Abstract

Pembelajaran berbasis proyek sangat membantu peserta didik memahami konsep materi polimer secara mendalam dan praktis. Melalui proyek pembuatan bioplastik, peserta didik memiliki kesempatan untuk mengaplikasikan teori yang telah dipelajari dalam pembuatan produk nyata, sehingga memperkuat pemahaman konsep materi polimer. Selain itu, pembelajaran berbasis proyek juga berperan dalam pembentukan karakter konservasi peserta didik. Peserta didik menunjukkan kesadaran yang lebih tinggi terhadap pentingnya pelestarian lingkungan dan keberlanjutan, karena mereka terlibat langsung dalam proses produksi bioplastik yang ramah lingkungan. Penelitian ini bertujuan untuk menguji penerapan pembelajaran berbasis proyek dengan produk bioplastik berbahan dasar kitosan mempengaruhi pemahaman konsep materi polimer dan pembentukan karakter konservasi pada peserta didik Kelas XII di SMA 1 Gebog Kudus. Penelitian ini menggunakan penelitian kuasi eksperimen atau dengan rancangan pretest-posttest control group design. Sampel penelitian ini adalah peserta didik kelas XII di SMAN 1 Gebog Kudus. Kelompok eksperimen diberikan pembelajaran berbasis proyek dengan menggunakan produk bioplastik berbahan dasar kitosan, sementara kelompok kontrol menerima pembelajaran dengan discovery learning. Pengumpulan data dilakukan dengan menggunakan instrumen tes pemahaman konsep materi kimia polimer sebelum dan setelah intervensi pembelajaran, serta observasi untuk menilai pembentukan karakter konservasi. Hasil penelitian menunjukkan bahwa nilai t-hitung > t-tabel (4,180 > 1,688) dan nilai signifikansi kurang dari 0,05 (p = 0,000 < 0,05). Maka dapat disimpulkan ada perbedaan rata-rata hasil nilai posttest antara kelas eksperimen dan kelas kontrol dengan kata lain penerapan pembelajaran berbasis proyek dengan produk bioplastik berbahan dasar kitosan dengan pembelajaran konvensional (discovery learning) akan menghasilkan pemahaman konsep materi polimer yang berbeda pada peserta didik Kelas XII di SMA 1 Gebog Kudus. Selain itu, pembelajaran berbasis proyek juga berkontribusi positif dalam pembentukan karakter konservasi peserta didik, di mana peserta didik menunjukkan kesadaran yang lebih tinggi terhadap pentingnya pelestarian lingkungan. Berdasarkan hasil penelitian ini, disarankan bagi pihak sekolah dan pendidik untuk mempertimbangkan penggunaan pembelajaran berbasis proyek dengan produk bioplastik berbahan dasar kitosan sebagai salah satu strategi dalam meningkatkan pemahaman konsep materi kimia polimer dan membentuk karakter konservasi peserta didik. Project-based learning significantly aids students in deeply and practically understanding the concept of polymer materials. Through the bioplastic creation project, students have the opportunity to apply the theories they have learned in the production of real products, thereby reinforcing their understanding of polymer material concepts. Additionally, project-based learning plays a role in developing students' conservation character. Students show higher awareness of the importance of environmental preservation and sustainability as they are directly involved in the production process of environmentally friendly bioplastics. This study aims to examine the effect of implementing project-based learning using chitosan-based bioplastic products on the understanding of polymer material concepts and the development of conservation character in 12th-grade students at SMA 1 Gebog Kudus. This study employs a quasi-experimental research design with a pretest-posttest control group design. The research sample consists of 12th-grade students at SMAN 1 Gebog Kudus. The experimental group received project-based learning using chitosan-based bioplastic products, while the control group received discovery learning. Data collection was conducted using a test instrument to assess the understanding of polymer chemistry concepts before and after the learning intervention, as well as observations to evaluate the development of conservation character. The research results show that the t-test value is greater than the t-table value (4.180 > 1.688) and the significance value is less than 0.05 (p = 0.000 < 0.05). Therefore, it can be concluded that there is a significant difference in the posttest scores between the experimental class and the control class. In other words, the implementation of project-based learning with chitosan-based bioplastic products compared to conventional discovery learning results in different levels of understanding of polymer material concepts among 12th-grade students at SMA 1 Gebog Kudus. Furthermore, project-based learning also positively contributes to the development of students' conservation character, with students demonstrating higher awareness of the importance of environmental preservation. Based on the findings of this study, it is recommended that schools and educators consider using project-based learning with chitosan-based bioplastic products as a strategy to enhance students' understanding of polymer chemistry concepts and develop their conservation character.

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