<![CDATA[Abstrak: Pembelajaran pengolahan data pada mata pelajaran informatika di SMK Antartika Surabaya masih didominasi pendekatan teoritis tanpa media interaktif yang memadai, sehingga siswa mengalami kesulitan dalam memahami dan mempraktikkan konsep pengolahan data secara langsung. Penelitian ini bertujuan mengembangkan website simulasi sebagai media pembelajaran pengolahan data, menilai kelayakannya, serta mengetahui respon siswa terhadap penggunaannya. Pengembangan dilakukan menggunakan model ADDIE dan diimplementasikan kepada 24 siswa kelas X TKJ SMK Antartika Surabaya. Kelayakan dinilai oleh validator ahli media dan ahli materi, sedangkan respon siswa diukur menggunakan angket berbasis Technology Acceptance Model (TAM) yang mencakup tiga dimensi, yaitu Perceived Ease of Use, Perceived Usefulness, dan Behavioral Intention to Use. Hasil validasi ahli media memperoleh rata-rata 88,33% dan ahli materi 90,00%, keduanya berkategori "Sangat Layak". Hasil angket TAM memperoleh rata-rata keseluruhan 68,81% berkategori "Baik". Dengan demikian, website simulasi "Data Sim" dinyatakan sangat layak sebagai media pembelajaran dan mendapatkan respon baik dari siswa pada mata pelajaran informatika di SMK Antartika Surabaya. Abstract: Data processing learning in informatics subjects at SMK Antartika Surabaya is still dominated by a theoretical approach without adequate interactive media, causing students to struggle in understanding and practicing data processing concepts directly. This study aims to develop a simulation website as a learning medium for data processing, assess its feasibility, and determine students' responses toward its use. The development was carried out using the ADDIE model and implemented with 24 students of class X TKJ at SMK Antartika Surabaya. Feasibility was assessed by media and material expert validators, while student responses were measured using a questionnaire based on the Technology Acceptance Model (TAM) covering three dimensions: Perceived Ease of Use, Perceived Usefulness, and Behavioral Intention to Use. Media expert validation obtained an average of 88.33% and material expert validation 90.00%, both categorized as "Very Feasible". The TAM questionnaire obtained an overall average of 68.81%, categorized as "Good". Therefore, the "Data Sim" simulation website is declared very feasible as a learning medium and received a good response from students in informatics subjects at SMK Antartika Surabaya]]>
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