PENGEMBANGAN BUKU KERJA DIGITAL FISIKA BERBASIS STEM DENGAN PENDEKATAN PjBL BAGI SISWA SMP

Penelitian ini bertujuan untuk mengembangkan buku kerja digital dengan pendekatan project-based learning yang layak dan efektif pada mata pelajaran fisika. Pengembangan ini menggunakan model ADDIE yang terdiri dari analisis, desain, pengembangan, implementasi, dan evaluasi. Uji kelayakan produk dilakukan melalui penilaian ahli media, ahli materi, dan diuji cobakan kepada peserta didik kelas VII di SMPN 1 Bandar Lampung. Hasil uji efektivitas diperoleh melalui pretest dan posttest. Adapun hasil uji kelayakan oleh ahli materi dan ahli media diperoleh hasil persentase tingkat pencapaian sebesar 85,71 % dan 95,45 % sehingga buku kerja digital termasuk dalam kategori layak digunakan. Uji coba one-to-one menunjukkan bahwa buku kerja digital berada pada kategori sangat baik dengan persentase rata-rata tingkat pencapaian sebesar 91,66%. Selain itu uji coba kelompok kecil juga menunjukkan persentase rata-rata tingkat pencapaian sebesar 89,74% sehingga termasuk dalam kategori sangat baik. Hasil uji efektivitas melalui penghitungan N-Gain Score diperoleh hasil sebesar 60,8 sehingga buku kerja digital dapat dikatakan cukup efektif. Berdasarkan hasil-hasil tersebut dapat disimpulkan bahwa buku kerja digital Fisika berbasis STEM dengan pendekatan project-based learning bagi siswa SMP layak dan efektif digunakan. This study aims to develop digital workbooks with a feasible and effective project-based learning approach in physics subjects. This development uses the ADDIE model which consists of analysis, design, development, implementation, and evaluation. The product feasibility test was carried out through the assessment of media experts, material experts, and was tested on class VII students at SMPN 1 Bandar Lampung. The results of the effectiveness test were obtained through the pretest and posttest. The results of the due diligence by material experts and media experts obtained a proportion of reporting rates of 85.71% and 95.45% so that digital workbooks fall into the category of proper use. The one-to-one trial shows that digital workbooks are in the very good category with an average proportion of sales rate of 91.66%. In addition, the small group trial also showed an average proportion of the reporting rate of 89.74%, so it was included in the very good category. The results of the effectiveness test by calculating the N-Gain Score obtained a result of 60.8 so that the digital workbook can be said to be quite effective. Based on these results, it can be interpreted that STEM-based digital Physics workbooks with a project-based learning approach for junior high school students are appropriate and effective for use