Tujuan dari penelitian ini adalah untuk mengembangkan bahan ajar Fisika berupa modul dengan pendekatan pembelajaran kontekstual padamateri Pengukuran Besaran Fisika untuk SMA kelas X yang memenuhi kriteria baik.
Penelitian yang menggunakan pendekatan kualitatif dengan didukung data kuantitatif ini merupakan penelitian pengembangan berdasarkan model yang dikembangkan oleh Borg dan Gall. Prosedur pengembangan penelitian ini meliputi: (1)Penelitian dan megumpulkan informasi,(2)Perencanaan, (3)Pengembangan draft produk, (4)Uji coba lapangan awal, (5)Merevisi hasil uji coba lapangan awal, dan (6)Uji coba lapangan utama. Teknik pengumpulan data yang digunakan berupa angket dan observasi. Data-data yang diperoleh berasal dari validator yang terdiri atas 2 dosen ahli, 2 guru sebagai reviewer dan 2 peer reviewer serta responden yang terdiri atas 10 siswa dariSMA Negeri 1 Simo dan 30 siswa yang berasal dari lima SMA yaitu SMA Negeri 1 Simo, SMA Negeri Karanggede, SMA Negeri 2 Boyolali, SMA Bhineka Karya Simo dan SMA Negeri 2 Simo.Data kuantitatif dianalisis dengan menggunakan penilaian skor standar dari Azwar yang kemudian dibagi menjadi lima kategori.Teknik analisis data kualitatif yang digunakan yakni model interaktif dari Miles dan Huberman yang melalui tahap reduksi data, penyajian data dan penarikan kesimpulan.
Berdasarkan hasil analisis data dan pembahasandapat disimpulkan bahwa: Pengembangan bahan ajar pembelajaran Fisika yang berupa modul materi Pengukuran Besaran Fisika kelas Xsecara umum sudah sangat baik berdasarkan kesesuaian hasil validasi ahli, peer reviewer dan reviewer  dalam aspek kelayakan isi, bahasa dan gambar, penyajian serta kegrafisan. Hasil validasi menunjukkan bahwa ahli I dan ahli II memberi skor total yakni 92 (Sangat baik), reviewer I dan II masing-masing memberi skor 86 dan 85 (Sangat Baik), sedangkan peer reviewer I memberi skor 82 (Baik) dan peer reviewer II sebesar 98 (sangat baik). Hasil ujicoba lapangan awal dan utama dengan hasil yang sangat baik. Hal ini terbukti bahwa ada 4 siswa yang menilai baik dan 6siswamenilai sangat baik dalam uji coba lapangan awal yang dilakukan kepada 10 siswa, serta  7 siswa menilai  baik dan 23 siswa menilai sangat baik dalam uji coba lapangan utama yang dilakukan kepada 30 siswa

The aim of this study was to develop Physics teaching material in the form of contextual learning approach module on the Measurement of Physics Units material for 10th Grade Senior High School students that fulfilled good criteria.
The study, which used qualitative approach supported by quantitative data, was a developing study based on a model developed by Borg and Gall. The developing procedure of this study included: (1) Research and collecting some information, (2) Planning, (3) Developing of products draft, (4) Initial field try out, (5) Revising the result of initial field try out, and (6) Main field try out. The data collecting techniques used in this study were questionnaire and observation. The data collected came from some validators, including 2 expert university-level lectures, 2 teachers as reviewers and 2 peer reviewers and also the respondents, which consisted of 10 students of Public Senior High School 1 Simo and 30 students from five Senior High Schools, including Public Senior High School 1 Simo, Public Senior High School Karanggede, Public Senior High School 2 Boyolali, Bhineka Karya Senior High School Simo, and Public Senior High School 2 Simo. The qualitative data were analyzed by using standard score assessment developed by Saifudin Azwar, which was divided into five categories. The qualitative data analysis technique used in this study was interactive model of Miles and Huberman through data reduction, data presentation, and drawing conclusion stages.
Based on the result of data analysis and discussion, it could be concluded that: The developing of Physics teaching material in the form of the Measurement of 10th grade Physics Units Module, generally had been extremely appropriate with a conformity of the validation result to the experts, peer reviewers, and reviewers in the content, language and picture, presentation, and graphical suitability. The validation result showed that expert I and expert II had given total score 92 (Very Good), reviewer I and II, each gave score 86 and 85 (Very Good), whereas peer reviewer I gave score 82 (Good) and peer reviewer II gave 98 (Very Good). The result of initial and main field showed very good results. It was proven from 4 students, who gave good score and 6 students, who gave very good scores in the initial field try out that was administered to 10 students, and 7 students that gave good score and 23 students that gave very good score in the main field try out, which was administered to 30 students