Tujuan penelitian pengembangan ini adalah (1) mengetahui kevalidan media pembelajaran Buku Saku Berbasis Mind Mapping,(2) mengetahui keefektifan pembelajaran Buku Saku Berbasis Mind Mapping,(3) mengetahui kemenarikan media pembelajaran Buku Saku Berbasis Mind Mapping untuk kelas III SDN Tanjung IV Pamekasan. Penilitian pengembangan ini menggunakan model pengembangan Brog and Gall yang dimodifikasi oleh sugiyono. Penelitian pengembangan ini diperoleh hasil persentase kevalidan rata-rata media pembelajaran Buku Saku Berbasis Mind Mapping 85,3% (Sangat Valid). Keefektifan diukur dari persentase kentuntasan klasikal pada tes hasil belajar sebesar 90%, persentase observasi aktivitas guru sebesar 88,57% (sangat efektif) dan persentase observasi aktivitas siswa sebesar 85% (Sangat efektif). Kemenarikan media pembelajaran Buku Saku Berbasis Mind Mapping diukur dari persentase angket respon siswa sebesar 93% (sangat menarik). Hasil tersebut menunjukkan bahwa media pembelajaran Buku Saku Berbasis Mind Mapping sangat valid, sangat efektif dan sangat menarik digunakan pada mata pelajaran IPA materi Sumber daya Alam kelas III SDN Tanjung IV Pamekasan Kata Kunci: Buku Saku Berbasis Mind Mapping, pembelajaran IPA, siswa kelas III SD.

The objectives of this development research were (1) to find out the validity of Mind Mapping-based Pocket Book learning media, (2) to find out the effectiveness of Mind Mapping-based Pocket Book learning, (3) to find out the attractiveness of Mind Mapping Pocket Book learning media for class III SDN Tanjung IV Pamekasan. This development research uses the development model Brog and Gall adapted by Sugiyono. This development research obtained the results of the validity percentage of the average Mind Mapping Pocket Book based learning media 85.3% (very Valid). Effectiveness is measured by the percentage of classical completeness on the learning outcomes test of 90%, the percentage of teacher activity observation is 88.57% (very effective) and the percentage of observation of student activities is 85% (very effective). The victory of Mind Mapping based Pocket Book learning media is measured by the percentage of student response questionnaires of 93% (very interesting). These results indicate that the learning media of Mind Mapping-Based Pocket Books are very valid, very effective and very interesting to use in science subjects. Natural Resources class III SDN Tanjung IV Pamekasan Keywords:Pocket Mapping Based on Mind Mapping, Science learning, Elementary School Thrid Grade Students.

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