Mengetahui pengaruh model realistic mathematic education (RME) ditinjau dari aspek kemampuan pemecahan masalah aljabar adalah tujuan dari penelitian ini. Untuk itu, peneliti memilih siswa kelas VII SMP Negeri 10 Pematangsiantar yang berjumlah 217 Orang yang terbagi dalam tujuh kelas paralel. Adapun sampel yang digunakan adalah siswa kelas VII3 yang berjumlah 30 orang yang diambil dengan menggunakan cluster random sampling. Instrumen yang digunakan test kemampuan pemecahan masalah yang berjumlah 5 butir soal pretest dan 5 butir soal posttest yang telah dinyatakan valid dan reliabel. Data-data yang telah terkumpul baik dari hasil pretest maupun posttest dinyatakan secara deskriptif. Data yang diperoleh menunjukkan bahwa data telah memenuhi syarat normalitas dan linieritas sehingga dapat dilakukan uji regresi linier. Hasil uji regresi linier memperlihatkan bahwa terdapat hubungan antara nilai pretest dan posttest. Ini artinya bahwa secara signifikan menunjukkan bahwa model RME dapat meningkatkan nilai siswa jika ditinjau dari kemampuan pemecahan masalah sebesar 80.4%.
This study aims to determine the influence of parental attention and learning motivation on mathematics learning outcomes of seventh-grade students of SMP Negeri 1 Pematangsiantar. Parental attention and learning motivation data obtained from an instrument in the form of a closed questionnaire distributed online via google form with good quality because it is valid and reliable. Meanwhile, students' mathematics learning outcomes were obtained from the school's documentation of grades. The test results show that there is a direct effect of parental attention on learning motivation with a t-count of 2.1309 and a significance level of 0.08325; there is a direct effect of parental attention on student mathematics learning outcomes with a t-count of 2.42875 and a significance level of 0.13768; there is an indirect effect of learning motivation on student mathematics learning outcomes with a t-count of 2.58298 and a significance level of 0.14988; there is an indirect effect of parental attention and learning motivation on mathematics learning outcomes. As for the contribution given by parents' attention and learning motivation to mathematics learning outcomes was 28.75% and the total effect was 42.327%. Therefore, the higher parental attention and student motivation, the higher the learning outcomes.
The online learning system (in the network) is a learning system without face to face directly between teachers and students but is carried out online using the internet network. Educators must ensure that teaching and learning activities continue to run according to the demands of the curriculum, even though students are at home. With a situation like this, teachers are required to make learning innovations related to the media that will be used to deliver online learning effectively. The diversity of teacher competency levels in carrying out online learning requires socialization activities for online classroom management in terms of using google classroom and making learning videos uploaded to youtube. Seeing these conditions, the service team from HKBP Nommensen University lecturers collaborated with school leaders at SMA Negeri 1 Sidikalang in terms of conducting socialization activities and online classroom management training through the learning media of google classroom and making learning videos uploaded on youtube. The results of the collaboration in the form of community service activities carried out can help teachers at SMA Negeri 1 Sidikalang as evidenced by the average teacher already having online classes and being able to manage online classes through Google Classroom and make good learning videos.
Penelitian ini bertujuan untuk mengetahui pengaruh kemampuan logika abstrak terhadap hasil belajar matematika di kelas VIII SMP Negeri 2 Aek Kuasan Penelitian ini merupakan penelitian kuantitatif. Sampel dalam penelitian ini adalah kelas VIII-A sebanyak 30 orang. Dari hasil perhitungan diperoleh rata-rata nilai kemampuan logika abstrak dan hasil belajar matematika siswa adalah 6,77 dan 6,53. Diperoleh uji linieritas dengan persamaan regresi Y = 0,85 + 0,84X dilakukan dengan uji F dan diperoleh data X dan Y mempunyai hubungan linier dan signifikan. Dengan menggunakan rumus korelasi product moment diperoleh koefisien korelasi sebesar 0,922. Karena rhitung > rtabel berarti terdapat hubungan yang positif antara variabel X dan Y. Untuk uji hipotesis digunakan uji t. Dari perhitungan diperoleh thitung > ttabel (12,602 > 2,048) maka H0 ditolak dah Ha diterima, yang artinya terdapat pengaruh yang positif dan signifikan antara kemampuan logika abstrak terhadap hasil belajar matematika di kelas VIII SMP Negeri 2 Aek Kuasan. Besar kontribusi pengaruh kemampuan logika abstrak terhadap hasil belajar matematika adalah 85,01 %, dan selebihnya dipengaruhi oleh faktor lain.
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