<![CDATA[Tujuan penelitian ini adalah mendeskripsikan kevalidan, kepraktisan dan keefektivan bahan ajar booklet berdasarkan hasil identifikasi tumbuhan paku (pteridophyta) di Kawasan Taman Botani Sukorambi untuk siswa kelas X SMA Argopuro Panti Jember. Jenis penelitian ini adalah Research and Development (R&D) dengan model pengembangan 4-D (four-D model) yang meliputi empat tahapan yaitu Define, Design, Development, dan Dissemination. Populasi penelitian ini adalah siswa kelas X SMA Argopuro Panti Jember. Teknik pengumpulan data yang digunakan yakni wawancara, angket, dan tes. Hasil peneliitian menunjukan bahwa 1) hasil validasi ahli materi memperoleh nilai rata-rata presentase sebesar 93,5% dengan kategori sangat valid. Hasil validasi ahli media memperoleh nilai rata-rata presentase sebesar 89,77% dengan kriteria sangat valid. Validasi ahli bahasa memperoleh hasil presentase sebesar 95,83% dengan kategori sangat valid. Untuk validasi guru biologi memperoleh nilai sebesar 93,05% dengan kategori sangat valid. 2) Hasil kepraktisan memperoleh presentase sebesar 91,53% termasuk kategori sagat menarik. 3) Hasil uji efektivitas memperoleh nilai sig (2-tailed) 0,00 < 0,05, maka bahan ajar booklet terbukti efektif digunakan sebagai bahan ajar. Sehingga dapat disimpulkan bahwa bahan ajar booklet valid, praktis, dan efektif digunakan peserta didik dalam proses pembelajaran. Kata Kunci: Bahan Ajar Booklet, Identifikasi Tumbuhan Paku, Taman Botani Sukorambi The purpose of this study was to describe the validity, practicality and effectiveness of booklet teaching materials based on the results of identification of ferns (pteridophyta) in the Sukorambi Botanical Garden Area for class X students of SMA Argopuro Panti Jember. This type of research is Research and Development (R&D) with a 4-D development model (four-D model) which includes four stages, namely Define, Design, Development, and Dissemination. The population of this research is class X SMA Argopuro Panti Jember. Data collection techniques used are interviews, questionnaires, and tests. The results of the research show that 1) the results of the validation of material experts obtain an average percentage value of 93.5% with a very valid category. The results of the media expert validation obtained an average percentage value of 89.77% with very valid criteria. Linguist validation results obtained a percentage of 95.83% with a very valid category. For validation the biology teacher obtained a score of 93.05% in the very valid category. 2) The practicality results obtained a percentage of 91.53% including the very attractive category. 3) The results of the effectiveness test obtained a sig (2-tailed) value of 0.00 <0.05, so booklet teaching materials proved to be effective as teaching materials. So it can be concluded that booklet teaching materials are valid, practical, and effective for students to use in the learning process. Keyword: Booklet Teaching Materials, Identification Of Ferns, Taman Botani Sukorambi]]>
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