<![CDATA[Penelitian ini bertujuan untuk mengembangkan media tiga dimensi model kayu penampang jaringan tumbuhan pada materi struktur dan fungsi tumbuhan kelas VIII SMP yang valid, praktis, dan efektif. Penelitian ini merupakan penelitian pengembangan (research & development) dengan mengadaptasi model penelitian ADDIE yang melalui beberapa tahap yaitu : analysis (analisis kondisi peserta didik, analisis kurikulum, analisis, media, analisis materi), desain (menentukan konsep yang akan dibuat media, mencari literatur tentang media tiga dimensi, merancang bentuk media yang akan dibuat, mencari bahan, mulai membuat produk), development (penyusunan instrumen dan validasi aspek media dan materi), implementation (uji praktikalitas dan efektivitas), dan evaluation (penilaian dan revisi akhir). Berdasarkan hasil penelitian pengembangan diketahui bahwa validitas pada aspek media dan materi dikategorikan sangat valid. Hasil uji praktikalitas dikategorikan sangat praktis. Hasil uji efektivitas ranah kognitif media adalah efektif dengan kategori peningkatan “tinggi†sedangkan efektivitas motivasi belajar siswa adalah efektif dengan kategori peningkatan sedang. Dengan hasil tersebut maka media tiga dimensi model kayu penampang jaringan tumbuhan pada materi struktur dan fungsi tumbuhan kelas VIII SMP valid, praktis dan efektif untuk digunakan dalam kegiatan pembelajaran biologi. Kata-kata kunci : Tiga Dimensi; Model Kayu; Struktur dan Fungsi Tumbuhan Abstract This research focused to develop a three dimensional media model of wood cross section of plant tissue on the material structure and function of plants to first grade of junior high school that is valid, practical and effective for uses in students’ learning activities. This research carried out development by adapting the ADDIEs’ research model through several stage, that is: analysis (analysis of students’ condition, analysis of curriculum, analysis of media and analysis of material), design (determine the concept that was created by the media, find the literature of three dimensional media, designing the shape of the media was created, looking for languages and start making shapes), development (preparation of instruments and validation of media and material aspects), and evaluation (final assessment & revision). Result indicated that the development of a three dimensional media and material is known that the assessment of the validity categorized was very vali. The result of practicality test categorized was very practical. For the result of the effectiveness test on cognitive was efective with the improvement category was high while the effectiveness of students’ learning motivation is effective with the improvement category was “moderateâ€. This indicates that there are three dimension media model of wood cross section of plant tissue on the material structure and function of plants to first grade of junior high school was valid, practical and effective for uses in students’ learning activities biology.]]>
