The study aimed to determine the effect of principals' learning leadership and innovative behaviour in implementing School-Based Management in SD Negeri Dolok Pardamean District, Simalungun Regency in 2021. This type of research was explanatory, so the appropriate method used was the survey method of 15 school principals as research respondents. The research instrument is a questionnaire containing 25 positive and negative statements with five answer choices located on a continuum line according to the Likert scale model and in the form of a closed questionnaire. Before being used, the questionnaire has been tested, and the results can be used as a research instrument. Data analysis techniques include descriptive analysis, requirements analysis tests, and hypothesis testing. Descriptive analysis was conducted to obtain an overview of the data from each research variable which was shown through the mean, median, mode, frequency distribution, and graphs. To identify the trend of each research variable, the average ideal score (Mi) and the ideal standard deviation (SDi) were used. Supported by the very strong learning leadership and innovative behaviour of the primary school principal; (3) Based on hypothesis testing, the results of the calculation of the value of th tt at a significance level of 0.05 are 5.96 2.02. The conclusion that there is a significant influence on learning leadership and innovative behaviour of elementary school principals in implementing School-Based Management is accepted as true.

This study aims to find a design study model character education consists of learning tools and study guides students on thematic learning. The method used is research and development (Research and Development) combined with action research methods.The survey results revealed that students are given guidance at the time of the trial in the class did not give meaningfulness in learning. On the Character Education Model Integrated Thematic Teaching at primary schools HKBP Pematangsiantar developed through this research feasible tested again on the stage of a pilot project to test subjects' primary schools HKBP Pematangsiantar grade 2 and 3. Then proceed to the stage of dissemination in the 1st grade, primary school HKBP Pematangsiantar so that it can serve as the basis for the submission of policy proposals in the field of character education.  

The goal of this study is to see how problem-solving learning paradigms affect students' grasp of physics ideas. This study is a quasi-experimental study. The sample was chosen using the cluster random class methodology, which consisted of two classes, the first of which was taught using a problem-solving learning model and the second of which was taught using traditional methods. Experiment classes provide problem-solving opportunities to help students better understand physics ideas, while control classes are taught in a traditional manner. Pre- and post-test results from students in both classes were used to collect data. The two-way Anava-test was applied, and the level of significance was found to be 0.000 (sig. 0.05), indicating that problem solving learning is beneficial in improving students’ understanding of physics concepts.

Masalah dalam penelitian ini adalah rendahnya aktivitas dan hasil belajar IPS  siswa dalam proses pembelajaran. Penelitian dilaksanakan di SD Negeri No. 122358 Pematangsiantar dengan subjek penelitian ini adalah siswa kelas V yang berjumlah 33 orang. Teknik pengumpulan data dalam penelitian ini adalah tes hasil belajar dengan soal essay tes dan lembar observasi aktivitas siswa untuk melihat aktivitas belajar siswa selama proses pembelajaran berlangsung. Teknik analisis data dilakukan dalam beberapa tahap yaitu reduksi data, penyajian data dan menarik kesimpulan. Dari data hasil observasi terhadap aktivitas siswa menunjukkan adanya peningkatan aktivitas siswa dari siklus I ke siklus II. Pada siklus I diperoleh 15,15% atau 5 orang untuk kriteria baik, 39,39% atau 13 orang untuk kriteria cukup dan 45,45% atau 15 orang untuk kriteria kurang. Sedangkan pada siklus II diperoleh 18,18% atau 6 orang untuk kriteria sangat baik, 69,69% atau 23 orang untuk kriteria baik, dan 12,12% atau 4 orang untuk kriteria cukup. Selanjutnya dari data nilai hasil belajar siswa pada siklus I jumlah siswa yang tuntas dalam belajar adalah 57,57% atau 19 orang dengan rata-rata 67,87, sedangkan pada siklus II jumlah siswa yang tuntas dalam belajar adalah 87,87% atau 29 orang dengan rata-rata 81,21. Terjadi peningkatan 13,34 poin. Dapat disimpulkan bahwa dengan menerapkan model pembelajaran partisipatif teknik Nominal Group dapat meningkatkan aktivitas dan hasil belajar IPS siswa kelas V di SD Negeri No. 122358 Pematangsiantar.

The Covid-19 pandemic is still sweeping the entire world, therefore understanding and information is needed regarding the prevention of covid-19 transmission. One of them is by washing your hands using running water and soap. The purpose of this activity is to provide socialization to the community in the Tiga Balata village to prevent the spread of Covid-19. Activities carried out by providing training in making liquid hand washing soap. It is hoped that from this activity the people of Tiga Balata Village will become an example to socialize ways to prevent the spread of Covid-19 to the surrounding community. This activity is also expected to be able to create business opportunities for the community in the midst of the Covid-19 pandemic. The method used in this service is the method of counseling and training. This hand washing soap-making training aims to improve community skills, especially participants in activities amid the Covid-19 pandemic. The result of this service is that the community is enthusiastic about participating in the training and has produced liquid soap products for personal use and commercial use as business opportunities.