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Indonesia merupakan negara yang rawan gempa bumi, seperti yang terjadi di Yogyakarta tahun 2006 yang menimbulkan banyak korban jiwa dan kerusakan besar. Hal ini menunjukkan pentingnya kesiapsiagaan bencana di perguruan tinggi. Mahasiswa sebagai agen perubahan berperan penting dalam mitigasi bencana. Self efficacy atau keyakinan diri menjadi salah satu faktor yang memengaruhi kesiapsiagaan mahasiswa. Penguatan self efficacy di kalangan mahasiswa sangat penting untuk membangun kesiapsiagaan bencana di perguruan tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian mini video edukasi penanganan kegawatdaruratan gempa bumi terhadap self efficacy mahasiswa keperawatan anestesiologi. Metode penelitian ini menggunakan desain pre-eksperimental dengan pendekatan pretest and postest design tanpa kelompok kontrol. Teknik sampling menggunakan Simple Random Sampling dengan instrumen berupa lembar angket kuisioner. Hasil bivariat menggunakan uji Wilcoxon.  Hasil analisis bivariat menggunakan uji wilcoxon menunjukan perbedaan yang signifikan antara self efficacy sebelum dan sesudah pemberian edukasi video yaitu didapatkan nilai signifikansi atau sig (2-tailed) sebesar 0.000 <0.05. sehingga H0 ditolah dan Ha diterima. Kesimpulannya terdapat pengaruh pemberian mini video edukasi penanganan kegawatdaruratan gempa bumi terhadap self efficacy mahasiswa keperawatan anestesiologi.

This study aims to improve the learning outcomes of fourth-grade students in science through the application of an experimental learning model on the material of changes in the state of matter. The study used a Classroom Action Research (CAR) approach with the Kemmis and McTaggart model which includes the stages of planning, implementation of actions, observation, and reflection. The subjects of the study were 20 fourth-grade students of SDN Daan Mogot 1. The study was conducted in two cycles. Data collection techniques included learning outcome tests, observation of teacher and student activities, and documentation. Data analysis was carried out quantitatively by calculating the average value and percentage of learning completion, and qualitatively through descriptive analysis of the observation results. The results showed that the application of the experimental method was able to improve the quality of the learning process and student learning outcomes. Teacher activity increased from the sufficient category in cycle I to very good in cycle II, while student activity increased from the good category to very good. Increased student activity in observing, discussing, recording results, and drawing conclusions from experiments had a positive impact on understanding the concept of changes in the state of matter. Student learning completion also increased although not all of them reached the classical standard of 80%. Thus, the experimental method is effective in improving the activeness, quality of the learning process, and the science learning outcomes of fourth-grade students. Although material reinforcement and a variety of learning strategies are still needed to optimize learning outcomes.

Salah satu jenis kuliner yang banyak digemari masyarakat adalah kue kering. Kastengel, sebagai salah satu jenis kue kering warisan Belanda. Kastengel adalah salah satu jenis kue kering yang populer di Indonesia. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan keju dangke terhadap hasil jadi produk kastangel ditinjau dari uji organoleptic meliputi warna, aroma, tekstur dan rasa, serta daya terima masyarakat terhadap olahan produk kastangel dengan tambahan keju dangke. Penelitian ini menggunakan metode eksperimen dengan tiga perlakuan konsentrasi keju dangke, yaitu 50%, 100%, dan 150% dari jumlah keju yang digunakan dalam resep standar.Data diperoleh melalui uji organoleptik oleh panelis terhadap lima parameter: rasa, aroma, tekstur luar,tekstur dalam dan warna. Selain itu, dilakukan uji daya terima untuk mengetahui tingkat kesukaan terhadap produk. Data dianalisis menggunakan uji One Way ANOVA untuk mengetahui pengaruh perlakuan terhadap masing-masing parameter yang diuji. Hasil penelitian menunjukkan bahwa 1). Penambahan keju dangke memberikan pengaruh yang signifikan (p < 0,05) terhadap parameter rasa dan aroma, namun tidak signifikan terhadap tekstur dan warna. 2). Perlakuan dengan penambahan keju dangke 100% merupakan yang paling disukai berdasarkan hasil uji daya terima masyarakat, dengan skor rata-rata tertinggi pada semua parameter.

Indonesia merupakan negara yang kaya akan sumber daya alam, termasuk berbagai jenis umbi-umbian yang berpotensi dimanfaatkan sebagai bahan pangan alternatif, salah satunya adalah umbi ganyong. Penelitian ini bertujuan untuk mengetahui pengaruh substitusi tepung pati ganyong terhadap rasa dan tekstur brownies, serta tingkat kesukaan konsumen terhadap brownies. Penelitian ini menggunakan metode eksperimen dengan pendekatan kuantitatif. Perlakuan yang diberikan berupa substitusi tepung pati ganyong dengan konsentrasi 0%, 25%, 50%, dan 75% terhadap total tepung dalam adonan brownies. Data dikumpulkan melalui uji organoleptik oleh 73 panelis tidak terlatih yang menilai dari aspek rasa, tekstur, tingkat kesukaan. Analisis data dilakukan dengan uji normalitas, homogenitas, ANOVA satu arah untuk mengetahui ada tidaknya pengaruh signifikan antar perlakuan. Hasil penelitian menunjukkan bahwa subtitusi tepung pati ganyong memberikan pengaruh signifikan terhadap atribut rasa brownies pada konsentrasi penambahan tepung ganyong sebanyak 25%,  atribut tekstur brownies pada konsentrasi penambahan tepung ganyong sebanyak 75%. Tingkat kesukaan konsumen terhadap brownies tertinggi pada konsentrasi penambahan tepung ganyong sebanyak 50%. Penelitian ini menunjukkan bahwa tepung pati ganyong berpotensi menjadi bahan baku alternatif dalam pembuatan brownies sekaligus mendukung pemanfaatan sumber daya pangan lokal yang lebih luas.

Penelitian ini menganalisis perilaku lentur balok beton bertulang dengan tulangan Glass Fiber Reinforced Polymer (GFRP) dibandingkan tulangan baja konvensional, ditinjau dari beban maksimum, lendutan maksimum, dan pola keruntuhan. Pengujian eksperimental dilakukan pada balok beton mutu K-225 berdimensi 150 × 150 × 600 mm menggunakan metode pembebanan dua titik. Benda uji terdiri atas balok kontrol (BKA dan BKB) serta balok variasi (BVA dan BVB). Hasil pengujian menunjukkan bahwa balok bertulangan GFRP memiliki kapasitas beban maksimum yang lebih tinggi, dengan peningkatan dari 28,68 kN menjadi 58,40 kN (103,6%) pada BKA–BVA dan dari 55,71 kN menjadi 68,01 kN (22,1%) pada BKB–BVB. Namun, balok variasi mengalami lendutan maksimum yang lebih besar, yaitu 7,74 mm dan 5,38 mm, dibandingkan balok kontrol sebesar 2,22 mm dan 2,92 mm. Pola keruntuhan menunjukkan bahwa balok kontrol mengalami keruntuhan lentur yang bersifat daktail, sedangkan balok variasi cenderung mengalami keruntuhan rapuh dengan dominasi retak lentur dan geser. Hasil ini menunjukkan bahwa tulangan GFRP efektif meningkatkan kapasitas beban balok, namun disertai dengan lendutan yang lebih besar dan keruntuhan yang lebih cenderung getas.

Penelitian ini bertujuan untuk mengetahui pengaruh penerapan Model Pembelajaran Berbasis Proyek berbantuan Media Baamboozle terhadap motivasi belajar dan hasil belajar ekonomi siswa kelas XI SMA Swasta Tunas Harapan. Metode penelitian yang digunakan adalah penelitian eksperimen semu dengan rancangan kelompok kontrol non-ekuivalen. Populasi penelitian ini adalah seluruh siswa kelas XI SMA Swasta Tunas Harapan yang berjumlah 50 orang. Teknik pengambilan sampel menggunakan sampel jenuh, sehingga diperoleh sampel sebanyak 25 siswa kelas XI-1 (kelas eksperimen) dan 25 siswa kelas XI-2 (kelas kontrol). Pengumpulan data menggunakan angket motivasi belajar siswa dan soal pilihan ganda. Analisis data menggunakan uji-t sampel independen. Hasil penelitian menunjukkan bahwa: 1) Terdapat pengaruh yang signifikan penerapan Model Pembelajaran Berbasis Proyek berbantuan Media Baamboozle terhadap motivasi belajar ekonomi siswa, 2) Terdapat pengaruh yang signifikan penerapan Model Pembelajaran Berbasis Proyek berbantuan Media Baamboozle terhadap hasil belajar ekonomi siswa kelas XI SMA Swasta Tunas Harapan.

Beton merupakan material utama konstruksi yang masih memiliki kelemahan pada kuat tekan dan permeabilitas. Inovasi dengan penambahan Superplasticizer diharapkan mampu meningkatkan kualitas beton. Permasalahan penelitian ini adalah bagaimana pengaruh variasi dosis Superplasticizer (1%, 1,5%, dan 2% dari berat semen) terhadap kuat tekan dan permeabilitas beton dibandingkan beton normal. Penelitian ini menggunakan metode eksperimen dengan membuat 48 sampel beton silinder dan kubus yang diuji kuat tekan pada umur 7, 14, dan 28 hari serta permeabilitas pada umur 28 hari. Hasil penelitian menunjukkan bahwa penambahan Superplasticizer mampu meningkatkan kuat tekan dan menurunkan permeabilitas, sehingga dapat menghasilkan beton yang lebih kuat, kedap air, dan tahan lama.

Anemia is a problem of health in young women. Anemia is a condition in the concentration levels of hemoglobin in the blood is low, one of the efforts to improve the levels of Hemoglobin by non Pharmacology given soy edamame. Is a kind of soy beans which the iron content of substance more than other types. In addition to iron, also contained Vit C, B12, and folic acid, which is also a constituent of hemoglobin in the blood. The purpose of this research is to know the effect of granting soy edamame to increased levels of hemoglobin in on young women. The research design used was quasy eksperiment. Population of young women who are experiencing anemia in boarding schools of Tahfiz Hisbah Al Fatih as many as 20 people, with the total sampling techniques. Research instrument is the observation sheet and tool checks digitally Hemoglobin. Results of the study were analyzed using paired t-test Test and independent t Test. The results obtained from this research is the following value mean increased levels of Hb after given Soy edamame was 0.46 gdl and mean increased levels of Hb after administering a local soybean is 0.18 gdl. This indicates that after the granting of the soy edamame tablet better if compared to a local soybean delivery after this. Research analysis of Hb levels after administering a local soybean or edamame soybeans gained ρ-value 0.006 (α = 0 .05), then it can be inferred that H0 is rejected and there is meaning accepted H1 influence awarding of soy edamame to increased levels of Hb teen daughter in boarding schools of Tahfiz Hisbah Al Fatih. For young women in particular are expected to eat green vegetables and legumes, especially soy edamame to prevent as well as treat mild anemia.

This research is motivated by the high level of academic procrastination found among students, particularly related to the habit of postponing assignments or homework. Persistent academic procrastination can negatively impact academic achievement, learning discipline, and character development. Therefore, this study aims to determine the effectiveness of using educational videos in reducing academic procrastination among students at MAN 1 Gresik in the 2023–2024 academic year. This study used a quantitative approach with a one-group pre-test-post-test pre-experimental design. The research instrument used a Likert scale to measure procrastination levels before and after the intervention. Information services through educational videos were provided in the form of a group guidance program designed to increase students' understanding of the impact of procrastination and motivate them to be more disciplined in managing their study time. The results showed that the use of educational videos was effective in reducing academic procrastination, as evidenced by lower post-test scores compared to pre-test scores.

This study aims to apply a simple experimental approach titled “Balloon Expands Without Being Blown” to enhance fifth-grade students’ understanding of gas concepts in science learning at MI Malik Ibrahim. The study originates from the observation that students often struggle to grasp the concepts of gases and acid–base reactions, which are typically taught in a purely theoretical manner without engaging hands-on experiences. The research employed a Classroom Action Research (CAR) design following Kurt Lewin’s model, which includes four interconnected stages: planning, acting, observing, and reflecting. The participants consisted of 22 fifth-grade students from MI Malik Ibrahim. The findings reveal a substantial improvement in both learning achievement and classroom participation after the experimental activity was introduced. Students’ average scores increased from 62 to 85, with 82% showing measurable progress. Furthermore, inquiry and discussion activities became more frequent, and most students could correctly explain the formation of carbon dioxide (CO₂) gas. Overall, the results suggest that the balloon expands without being blown experiment effectively fosters scientific conceptual understanding, promotes active engagement, and stimulates motivation toward learning science.

Panel surya merupakan salah satu solusi energi terbarukan yang banyak dikembangkan di Indonesia. Namun, salah satu kendala utama dalam implementasinya adalah penurunan efisiensi akibat peningkatan suhu permukaan panel saat terpapar sinar matahari secara intensif. Penelitian ini bertujuan untuk mengkaji efektivitas sistem pendingin pasif berbasis alumunium fin dalam mengoptimalkan kinerja panel surya. Metode eksperimen digunakan dengan membandingkan dua unit panel surya: satu unit menggunakan sistem pendingin pasif dengan fin alumunium dan satu unit lainnya tanpa sistem pendingin. Parameter yang diamati meliputi suhu permukaan panel, tegangan output, arus, dan efisiensi daya. Hasil penelitian menunjukkan bahwa penggunaan alumunium fin mampu menurunkan suhu rata-rata permukaan panel sebesar 8–10°C dibanding panel tanpa pendingin. Penurunan suhu ini berdampak positif terhadap peningkatan efisiensi panel surya sebesar 12,5%. Alumunium dipilih sebagai material utama karena konduktivitas termalnya yang tinggi serta ringan dan ekonomis. Dengan penerapan sistem ini, diharapkan pemanfaatan panel surya di wilayah tropis seperti Indonesia dapat menjadi lebih optimal tanpa tambahan konsumsi energi. Penelitian ini merekomendasikan penggunaan sistem pendingin pasif sebagai solusi efektif dan berbiaya rendah dalam pengembangan sistem energi surya skala kecil hingga menengah.

This study discusses the application of a simple experimental method using eggs and salt water as a medium for teaching basic science at MI Jam'iyatul Mubtadiin. The main objective is to improve students' understanding of the concepts of mass and buoyancy through direct experience. The research method used was a descriptive qualitative approach with fourth-grade students as subjects. The learning process was carried out through simple experimental steps: preparing fresh water, adding salt, and observing changes in the position of the eggs in the solution. Data were collected through observation, interviews, and . The results showed that this experimental method was able to attract students' interest, increase active participation, and make abstract concepts easier to understand. In addition, this simple experiment-based learning also trains students' critical thinking skills and curiosity. Thus, the use of egg and salt water experiments can be an alternative to effective, inexpensive science learning media that is suitable for the characteristics of elementary school students.

This study focuses on the analysis of students' learning experiences through artificial volcanic eruption experiments in understanding the material of changes in the state of matter at MI Miftahul Ulum. The problem underlying this study is the difficulty students have in learning the abstract concept of changes in state, so a learning strategy based on real experiences is needed. The artificial volcanic eruption experiment was chosen because it is able to show the process of changes in the state of matter through simple chemical reactions in an interesting and easy-to-understand way. The method used is qualitative research with a descriptive approach. The subjects of the study were fifth-grade students of MI Miftahul Ulum. Data were obtained through observation, interviews, and documentation, then analyzed using the stages of data reduction, data presentation, and drawing conclusions. The results of the study showed that the implementation of the artificial volcanic eruption experiment created a meaningful learning experience for students. Students appeared more enthusiastic, active, and easily grasped the concept of changes in the state of matter because they experienced the change process directly. In addition, this experiment also fostered students' curiosity, cooperation, and scientific attitudes in learning activities. Based on these findings, it can be concluded that the artificial volcanic eruption experiment is an effective learning medium to strengthen the learning experience while improving students' understanding of the material of changes in the state of matter.

Penyakit Demam Berdarah Dengue (DBD) merupakan suatu penyakit yang disebabkan oleh gigitan nyamuk betina spesies aedes aegypti yang membawa virus dengue. Anak usia sekolah rentan terhadap penularan DBD sehingga sangat penting diberikan edukasi tentang penyakit ini. Metode edukasi yang tepat untuk anak usia sekolah salah satunya yaitu dengan permainan edukatif seperti permainan ular tangga. Metode permainan ini bisa memudahkan anak sekolah untuk menambahkan pengetahuan tentang penyakit DBD pada anak sekolah. Tujuan penelitian ini untuk mengetahui pengaruh edukasi permainan ular tangga tentang penyakit DBD terhadap tingkat pengetahuan pada anak sekolah. Jenis penelitian ini yaitu pre eksperimen dengan pendekatan one group pretest posttest design. Populasi adalah seluruh siswa-siswi sebanyak 193 orang. Teknik pengambilan sampel menggunakan proporsional random sampling yang ditetapkan berdasarkan rumus Slovin sehingga jumlah sampel sebanyak 66 orang. Instrumen pengumpulan data menggunakan lembar kuesioner. Analisis data menggunakan uji wilcoxon sampel t-test. Hasil penelitian pengaruh sebelum dan sesudah pemberian edukasi permainan ular tangga tentang penyakit DBD didapatkan p-value 0,000 (< 0.05). Kesimpulan penelitian ada pengaruh sebelum dan sesudah pemberian edukasi permainan ular tangga tentang penyakit DBD pada anak sekolah.

Mosquito coil smoke is the most commonly used insecticide by the public for mosquito control. The main active ingredient in these products is a pyrethroid derivative called Allethrin, which can generate free radicals that potentially damage the kidneys. This study aimed to evaluate the effect of varying durations of exposure to mosquito coil smoke on the histopathological features of the kidneys in male Wistar rats (Rattus norvegicus). The research employed a laboratory experimental method with a Post-Test Only Group Design. A total of 24 male Wistar rats were divided into four groups: a control group without treatment and three treatment groups exposed to mosquito coil smoke for 5 hours, 7 hours, and 9 hours per day over 21 days. After the treatment period, the rats were euthanized by cervical dislocation, their kidneys were harvested, and histopathological preparations were made and scored using the Venient et al. scoring system. Statistical analysis using the Kruskal-Wallis and Mann-Whitney tests revealed significant differences in kidney damage between the control and treatment groups (p < 0.001). The study concluded that varying durations of exposure to mosquito coil smoke cause significant differences in kidney histopathological damage in rats, with the most severe damage observed in the group exposed for 9 hours per day.

Depresi merupakan salah satu permasalahan kesehatan yang sering ditemukan pada lansia di Indonesia. Depresi pada lansia dapat menyebabkan dampak yang besar bagi lansia, antara lain dapat menurunkan kemampuan, kemandirian, dan penurunan fungsi tubuh lansia dalam melakukan aktivitas sehari-hari, menurunkan kemandirian dan kualitas hidup lansia serta kesedihan ditinggal orang yang dicintai, factor kepribadian, genetik, dan faktor bilogis penurunan neuron-neuron dan neurotransmitter. Salah satu cara untuk mengatasi depresi pada lansia adalah dengan memberikan terapi progressive muscle relaxation (PMR). Penelitian ini bertujuan untuk mengetahui pengaruh terapi progrssive muscle relaxation (PMR) terhadap penurunan tingkat depresi pada lansia di Panti Rumah Kasih Emaus Pangkalan Baru Tahun 2024. Penelitian ini menggunakan desain pre-eksperimental one group pre test dan post test. Penelitian ini dilakukan pada 11 lansia di Panti Rumah Kasih Emaus Pangkalan Baru Tahun 2024. Peneliti melakukan pengukuran awal depresi, setelah itu melakukan terapi Progressive muscle relaxation (PMR) selama 20-30 menit, dan dilanjutkan dengan melakukan pengukuran akhir. Data yang sudah terkumpul kemudian dilakukan analisis secara univariat dan bivariat dengan paired t-test. Hasil penelitian menunjukan nilai rata rata depresi lansia pre test adalah 7,27 setelah lansia diberikan terapi progressive muscle relaxation (PMR), nilai tingkat depresi lansia mengalami penurunan menjadi 3,36. Hasil uji paired t-test didapatkan nilai p-value= 0,001 < 0,05, sehingga dapat disimpulkan bahwa ada pengaruh terapi progressive muscle relaxation (PMR) terhadap penurunan tingkat depresi pada lansia di Panti Rumah Kasih Emaus Pangkalan Baru Tahun 2024. Diharapkan bagi panti lansia bisa menyediakan program terapi progressive muscle relaxation (PMR) secara teratur, yang dapat membantu meningkatkan mood dan kesejahteraan fisik lansia.

Fermentation of seluang fish (Rasbora spp.) pekasam is a traditional method for extending shelf life and enhancing flavor, typically produced through spontaneous fermentation dominated by lactic acid bacteria (LAB). However, uncontrolled production processes lead to significant variability in product quality. This research aims to optimize the fermentation process of seluang fish pekasam through a series of controlled microbiology-based experimental practicums. The experiments were designed to investigate the impact of two main parameters: (1) the use of a LAB starter culture isolated from high-quality pekasam, and (2) the control of incubation temperature (e.g., at 25°C and 30°C). During the fermentation period, samples were periodically analyzed to measure changes in physicochemical parameters, including pH, moisture content, and salt concentration. Microbiological analysis was performed to count the populations of LAB and other spoilage microbes. The results showed that the use of a LAB starter culture significantly accelerated the pH drop within the first 24 hours, reaching a critical pH below 4.5, which effectively inhibited the growth of pathogenic microbes. Furthermore, the optimal raw material ratio and controlled incubation temperature resulted in pekasam with a firmer texture and a more balanced sour-savory taste, differing significantly from spontaneously fermented products. Organoleptic tests confirmed panelists' preference for the product made with the optimal treatment. The conclusion of this study is that optimization through microbiology-based experimental practicums is key to the standardization and improvement of the quality and food safety of pekasam products.

Pempek is a traditional Indonesian food that is widely loved by people because of its delicious taste and easy availability in various regions, especially in coastal areas. However, although pempek is made from ingredients that are generally safe for consumption, the unhygienic production process has the potential to cause contamination by pathogenic bacteria. The process of making pempek involves many hands, unsterile processing, and inadequate storage can increase the risk of bacterial proliferation, especially in food served by street vendors. This study aims to identify the presence of pathogenic bacteria in pempek sold by street vendors around the campus environment. By using sample dilution methods, inoculation onto Nutrient Agar (NA) media, as well as colony morphology differentiation and Gram staining, this study successfully identified several pathogenic bacteria that have the potential to harm health. The bacteria found included Staphylococcus sp., known as a pathogen causing food poisoning, E. coli which can cause gastrointestinal disorders, and Pseudomonas sp. which can cause skin and respiratory infections. Based on the results of this study, it is important for local food producers to maintain cleanliness and ensure hygienic production processes so that the food sold is safe for consumption. Furthermore, food quality monitoring by authorities and education for producers on the importance of hygiene in food preparation need to be strengthened to prevent the risk of foodborne illnesses. Furthermore, regular inspections of food sold by street vendors are crucial to ensure it is free from harmful microbial contamination. Implementing proper sanitation procedures at every stage of pempek production, from selecting raw materials to serving, can minimize the risk of microbial contamination.

Breast milk (ASI) is the most perfect source of nutrition for infants, especially during the first six months of life. However, many postpartum mothers experience obstacles in producing breast milk optimally. One non-pharmacological alternative to increase breast milk production is the consumption of mung bean extract, which contains lactagogues and B-complex vitamins. This study aims to determine the effect of mung bean extract on breast milk production in postpartum mothers. The method used was a quasi-experimental design with a one-group pretest-posttest approach involving 10 postpartum mothers at PMB Bidan SRI, Selesai Subdistrict, Langkat Regency. The intervention was carried out for seven consecutive days, and data were analyzed using the Wilcoxon Signed-Rank test. The results showed a significant increase in the average breast milk production score from 1.20 to 2.90 after the intervention, with a p-value of 0.004. This indicates that mung bean extract has a positive effect on increasing breast milk production. These findings are expected to serve as a basis for healthcare providers to recommend mung bean consumption in lactation management for postpartum mothers.

This research is motivated by the low learning outcomes of students and the lack of student learning outcomes in learning and the use of learning methods that are less influential in improving student learning outcomes in paying attention to the material presented by the teacher. This study aims to determine and describe how efforts to improve the learning outcomes of fourth-grade students at SDK WESOER in the science subject about Energy and its changes by using the Experimental Method. This research is a classroom action research (CAR), the data collection instruments used are observation, interviews, documentation, and tests. This research consists of 2 cycles, each cycle consisting of 1 meeting. Each cycle consists of the planning, observation, implementation, and reflection stages. The results of the study indicate that the use of the experimental method can improve student learning outcomes on the sub-theme of energy and its changes in fourth grade at SDK Wesoer. Before conducting the research, researchers conducted observations. During the learning process, the teacher did not use the experimental method on the material of energy and its changes, so from 25 students only 8 students got a complete score reaching the KKM with a percentage of 32%, and 17 students got an incomplete score not reaching the KKM with a percentage of 68%. After conducting research using the experimental method on energy and its transformations, in Cycle I, 14 students achieved a passing grade and achieved the Minimum Completion Minimum (KKM) with a percentage of 56%, while 11 students received an incomplete grade, failing to achieve the KKM with a percentage of 44%. In Cycle II, the learning outcomes improved further, with 20 students achieving a passing grade with a percentage of 80%, and 5 students receiving an incomplete grade with a percentage of 20%.