AbstrakPenelitian ini bertujuan untuk mengembangkan bahan ajar berupa buku ajar matematika berbasis multiple intelligences pada materi trigonometri untuk meningkatkan kemampuan berpikir kritis siswa kelas X SMAN 3 Wajo dan mengetahui tingkat kevalidan, kepraktisan, dan keefetifannya. Jenis penelitian yang digunakan adalah Research & Development dengan mengacu pada model 4D yang terdiri dari Define, Design, Development dan Dissseminate. Produk yang dikembangkan berupa buku ajar berbasis multiple intelligences pada materi trigonometri yang diantaranya terdiri dari beberapa aspek multiple intelligences yaitu logis-matematis, visual-spasial, linguistik-verbal, interpersonal dan intrapersonal. Berdasarkan hasil ujicoba terbatas yang dilakukan, diperoleh bahwa (1) Buku ajar berbasis multiple intelligences dikembangkan dengan menggunakan model pengembangan 4D (define, design, development, dan disseminate), (2) Bahan ajar valid berdasarkan rata-rata penilaian hasil validasi buku ajar beserta instrumen lainnya adalah 4,17 dengan kategori sangat valid, (3) Praktis karena persentase rerata untuk respons siswa adalah 81,25% pada kategori positif dan persentase rerata respons guru adalah 92,50% pada kategori sangat positif, (4) Efektif karena rerata kemampuan guru dalam mengelola pembelajaran ialah 4,28 berada pada kategori baik, persentase rata-rata aktivitas siswa adalah 64,53% berada pada kategori baik, dan persentase ketuntasan belajar siswa berada pada kategori tinggi yaitu 80,65%. Sehingga pengembangan bahan ajar berbasis multiple intelligences pada materi trigonometri di kelas X SMAN 3 Wajo sudah memenuhi kriteria kevalidan, kepraktisan, dan keefektifan. AbstractThe study aims to develop teaching material in the form of mathematics textbook based on multiple intelligences in trigonometry material to improve critical thinking ability of class X students of SMAN 3 Wajo and to determine the level of validity, practicality, and effectiveness. The type of research used is Research and Development with reference to the 4D model which consists of Define, Design, Development, and Disseminate. The product developed is a textbook based on multiple intelligences on trigonometric material which includes several aspects of multiple intelligences, namely logical mathematical, visual-spatial, linguistic-verbal, interpersonal and intrapersonal. Based on the result of limited trials conducted, it was found that (1) Multiple intelligences based textbook were developed using the 4D development model (define, design, development, and disseminate), (2) Valid based on the average assessment of the validation results of the textbooks and other instruments is 4.17 in the very valid category, (3) Practical because the average percentage of student responses is 81.25% in the positive category and the average percentage of teacher response is 92.50% in the very positive category, (4) Effective because the teacher’s average ability in managing learning is 4.28 in the good category, the average percentage of student activity is 64.43% in the good category, and percentage of student learning completeness is in the high category, namely 80.65%. So, the development of teaching material based on multiple intelligences on trigonometric material in class X SMAN 3 Wajo has met the criteria of validity, practicality, and effectiveness.
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