Electronic Theses and Dissertation

Kurangnya sistem digital yang efisien untuk mengelola laboratorium kimia di sekolah menengah sering menghambat pencatatan yang efektif, pelacakan inventaris, dan pelaporan praktikum. Penelitian ini bertujuan untuk mengembangkan Chemlab Excel, sebuah sistem manajemen laboratorium berbasis Microsoft Excel yang dirancang praktis, sederhana, dan dapat digunakan secara offline tanpa memerlukan internet atau perangkat lunak tambahan. Penelitian ini menggunakan metode Research and Development (R&D) dengan pendekatan model ADDIE, meliputi tahapan analisis, desain, pengembangan, implementasi, dan evaluasi. Penelitian dilaksanakan di SMA Negeri 1 Bireuen dan SMA Negeri 1 Samalanga dengan melibatkan 9 orang responden yang dipilih menggunakan teknik purposive sampling berdasarkan kriteria memiliki laboratorium kimia dan guru kimia yang aktif mengelola laboratorium. Instrumen pengumpulan data meliputi lembar validasi ahli, angket tanggapan guru terhadap Chemlab Excel, dan Sistem Usability Scale (SUS). Validitas dianalisis menggunakan Aiken’s V, sedangkan konsistensi antarpenilai diukur melalui Intraclass Correlation Coefficient (ICC) oleh tiga validator ahli. Hasil validasi dan reliabilitas menunjukkan Chemlab Excel tergolong “sangat layak” dengan nilai Aiken’s V sebesar 0,852 untuk aspek media dan 0,869 untuk aspek materi. Konsistensi antarpenilai menunjukkan ICC masing-masing 0,768 (media), 0,761 (materi), dan 0,778 (angket respon), menandakan reliabilitas yang baik. Tanggapan pengguna sangat positif dengan nilai Aiken’s V rata-rata 0,963, sementara skor rata-rata SUS mencapai 72,22%, termasuk dalam kategori acceptable. Respons guru terhadap kepraktisan sistem mencapai 94,64%, mencerminkan tingkat akseptabilitas dan kemudahan penggunaan yang tinggi. Hasil penelitian ini menegaskan bahwa Chemlab Excel merupakan sistem manajemen laboratorium berbasis spreadsheet yang layak, efektif, ramah pengguna, dan mendukung keteraturan administrasi laboratorium dalam pembelajaran sains berbasis eksperimen di lingkungan sekolah menengah.
Kata kunci: ChemLab Excel, Manajemen Laboratorium, Skala Kegunaan Sistem (SUS), ADDIE, Aiken V.

The lack of an efficient digital sistem for managing chemistry laboratories in secondary schools often hinders effective record-keeping, inventory tracking, and practicum reporting. This study aims to develop Chemlab Excel, a laboratory management sistem based on Microsoft Excel, designed to be practical, cost-effective, and operable offline without requiring internet Access or additional software. The research employs a Research and Development (R&D) methodology with the ADDIE model, encompassing the phases of analysis, design, development, implementation, and evaluation. The study was conducted at SMA Negeri 1 Bireuen and SMA Negeri 1 Samalanga, involving nine respondents selected using purposive sampling based on the criteria of possessing a chemistry laboratory and having actively involved chemistry teachers managing the laboratory. Data collection instruments included expert validation sheets, a teacher feedback questionnaire on Chemlab Excel, and the Sistem Usability Scale (SUS). Validity was assessed using Aiken’s V, while inter-rater consistency was measured through the Intraclass Correlation Coefficient (ICC) by three expert validators. Validation results indicate that Chemlab Excel is deemed “highly feasible,” with Aiken’s V values of 0.852 for the media aspect and 0.869 for the material aspect. Inter-rater consistency yielded ICC values of 0.768 (media), 0.761 (material), and 0.778 (response questionnaire), indicating good reliability. User feedback was highly positive, with an average Aiken’s V of 0.963, while the average SUS score reached 72.22%, falling within the acceptable category. Teacher responses regarding the sistem’s practicality scored 94.64%, reflecting a high level of acceptability and ease of use. The findings of this study affirm that Chemlab Excel is a feasible, effective, user-friendly spreadsheet-based laboratory management sistem that supports the orderly administration of laboratories in experimental science learning within secondary school environments. Keywords: ChemLab Excel, Laboratory Management, Sistem Usability Scale (SUS), ADDIE, Aiken V.