Electronic Theses and Dissertation

Pembelajaran kimia di jenjang SMA menuntut pemahaman konseptual yang mendalam, terutama pada materi termokimia yang bersifat abstrak dan kompleks. Keterbatasan bahan ajar yang kontekstual dan rendahnya keterlibatan peserta didik dalam proses pembelajaran menyebabkan lemahnya penguasaan konsep dan kemampuan berpikir kritis. Penelitian ini bertujuan mengembangkan dan menguji kelayakan Lembar Kerja Peserta Didik (LKPD) berbasis proyek dengan scaffolding pada materi termokimia kelas XI. Prosedur pengembangan mengikuti model 4D (Define, Design, Develop, Disseminate) dengan fokus pada tahap pengembangan. Validasi oleh dua ahli pendidikan kimia menunjukkan tingkat validitas sangat tinggi dengan nilai Aiken’s V sebesar 0,94. Reliabilitas yang diperoleh melalui metode percent agreement antarpenilai sebesar 78,57% termasuk kategori kuat. Uji coba terbatas terhadap 30 peserta didik kelas XI F1 dan satu guru kimia di SMAN 1 Darul Imarah menunjukkan kepraktisan tinggi, masing-masing 86,00% dan 97,78%. LKPD dirancang dengan integrasi tahapan proyek, bantuan bertahap melalui isian terbimbing, dan pemanfaatan teknologi digital melalui kode QR yang memuat materi pendukung, video, dan simulasi. Hasil penelitian menunjukkan bahwa LKPD yang dikembangkan valid, reliabel, dan praktis sebagai alternatif bahan ajar pada pembelajaran kimia.

Chemistry learning at the senior high school level requires a deep conceptual understanding, particularly in thermochemistry, which is abstract and complex in nature. The lack of contextual teaching materials and limited student engagement in the learning process contribute to weak conceptual mastery and critical thinking skills. This study aims to develop and evaluate the feasibility of a project-based student worksheet with scaffolding on thermochemistry material for Grade XI students. The development procedure follows the 4D model (Define, Design, Develop, Disseminate), with a focus on the development stage. Validation by two chemistry education experts indicated a very high level of validity, with an Aiken’s V value of 0.94. Reliability, measured using the percent agreement method between raters, was 78.57%, classified as strong. A limited trial involving 30 Grade XI-F1 students and one chemistry teacher at SMAN 1 Darul Imarah showed high practicality, with percentages of 86.00% and 97.78%, respectively. The worksheet was designed by integrating project stages, gradual guidance through structured prompts, and the use of digital technology via QR codes linking to supporting materials, videos, and simulations. The results indicate that the developed LKPD is valid, reliable, and practical as an alternative teaching material in chemistry learning.