<![CDATA[This study aimed to examine the effect of implementing the Mentimeter application on students' learning motivation in chemistry learning concerning the topic of the Basic Laws of Chemistry at MAS At-Taqwa Beru. The study was motivated by students' low learning motivation, evidenced by minimal classroom participation, low enthusiasm, and the persistence of conventional lecture methods lacking interactive media support. A quantitative quasi-experimental approach utilizing a posttest-only control group design was employed. The research sample comprised 34 tenth-grade students divided into a control class (17 students) and an experimental class (17 students), selected via purposive sampling. Motivation data were gathered through a validated ARCS-based (Attention, Relevance, Confidence, Satisfaction) questionnaire and analyzed using the Independent Sample t-test alongside the N-gain test. Inferential statistical analysis verified that the data were normally distributed and homogeneous, with hypothesis testing demonstrating a statistically significant difference in learning motivation between both classes (t_"count" =-9.320,p=0.000<0.05). The average N-gain for the experimental class reached 68.01%, markedly outperforming the control class at 53.44%. Consequently, the implementation of the interactive Mentimeter application is empirically proven to be effective in augmenting students' learning motivation in the Basic Laws of Chemistry. ABSTRAK Penelitian ini bertujuan untuk menguji pengaruh penerapan aplikasi Mentimeter terhadap motivasi belajar peserta didik dalam pembelajaran kimia pada materi Hukum Dasar Kimia di MAS At-Taqwa Beru. Penelitian ini dilatarbelakangi oleh rendahnya motivasi belajar peserta didik yang ditandai dengan minimnya partisipasi aktif di kelas, rendahnya antusiasme belajar, serta dominasi metode ceramah tanpa dukungan media interaktif. Pendekatan yang digunakan adalah kuantitatif dengan metode eksperimen semu melalui desain posttest-only control group design. Sampel penelitian berjumlah 34 peserta didik kelas X yang terbagi ke dalam kelas kontrol (17 peserta didik) dan kelas eksperimen (17 peserta didik) yang dipilih menggunakan teknik purposive sampling. Data motivasi belajar dikumpulkan melalui angket model ARCS (Attention, Relevance, Confidence, Satisfaction) yang telah tervalidasi dan dianalisis menggunakan uji Independent Sample t-test serta uji N-gain. Hasil analisis inferensial membuktikan bahwa data berdistribusi normal dan memiliki varians yang homogen, dengan uji hipotesis menunjukkan perbedaan motivasi yang signifikan antara kedua kelas (t_"hitung" =-9,320,p=0,000<0,05). Nilai rata-rata N-gain kelas eksperimen mencapai 68,01% yang melampaui kelas kontrol sebesar 53,44%. Dengan demikian, penerapan media pembelajaran interaktif berbasis aplikasi Mentimeter terbukti efektif dalam meningkatkan motivasi belajar peserta didik pada materi Hukum Dasar Kimia. ]]>
