Abstrak: Teknologi dalam bidang Pendidikan telah berkembang pesat, salah satunya adalah munculnya E-learning. Penelitian ini bertujuan untuk mengembangkan bahan ajar tematik pendamping guru berbasis E-learning. Pengembangan bahan ajar menggunakan model pengembangan Borg and Gall terdiri atas 10 langkah. Data dikumpulkan melihat kelayakan produk E-learning. Data angket dari ahli isi/materi, ahli media, ahli desain, teman sejawat dan 24 siswa. Teknik analisis data bersifat diskriptif. Hasil reviu kelayakan produk pengembangan:1) review ahli isi/materi  97%,2) reviu ahli media 83%, 3) reviu ahli desain 88%, 4) uji coba perorangan 90%, 4) uji coba kelompok 93%, 5) uji coba produk terhadap siswa presentase 83%. Nilai rata-rata keseluruhan uji kelayakan adalah 89%. Dengan kriteria kelayakan sangat baik.Abstract: Technology in education, one of which is e-learning, requires the appropriate teaching materials in the implementation of thematic. By using the descriptive qualitative method, the results showed as follows: 1) content expert review is 97%. 2) media expert review is 83%, 3) design expert review 88%, 4) individual product trial is 90%, 5) product group trial is 93%, 6) product trials on students and student responses through questionnaires is 83%. The average score of the overall feasibility test is 89%. With the ‘very good’ feasibility criteria, the product developed is appropriate to be used as supplementary teaching materials in thematic learning.
                        
                        
                        
                        
                            
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