This study aims to determine the effect of GeoCube media on students' collaborative abilities in learning about geospheric phenomena at SMA Negeri 1 Talamau, West Pasaman Regency. The method used was a quasi-experimental design with a nonequivalent control group design. Data were collected through tests, observations, and documentation, and analyzed using a T-test. The results showed that GeoCube media had an effect on students' collaborative abilities, with a significance value of 0.039 <0.05, indicating a difference between the experimental and control classes, where the average for the experimental class was higher. The increase in collaborative abilities of the experimental class was in the moderate category, while the control class was low. Keywords: GeoCube Media, Collaborative Ability, Geography Learning ABSTRAK Penelitian ini bertujuan mengetahui pengaruh penggunaan media GeoCube terhadap kemampuan kolaboratif peserta didik pada pembelajaran fenomena geosfer di SMA Negeri 1 Talamau, Kabupaten Pasaman Barat. Metode yang digunakan adalah quasi eksperimen dengan desain nonequivalent control group design. Data dikumpulkan melalui tes, observasi, dan dokumentasi, serta dianalisis menggunakan uji T. Hasil penelitian menunjukkan terdapat pengaruh penggunaan media GeoCube terhadap kemampuan kolaboratif peserta didik, dengan nilai signifikansi 0,039 < 0,05, sehingga terdapat perbedaan antara kelas eksperimen dan kontrol, di mana rata-rata kelas eksperimen lebih tinggi. Peningkatan kemampuan kolaboratif kelas eksperimen berada pada kategori sedang, sedangkan kelas kontrol rendah. Kata Kunci: Media GeoCube, Kemampuan Kolaboratif, Pembelajaran Geografi
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