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This research aims to: (1) improve students' mathematical reasoning abilities by applying the problem based learning model assisted by the Geogebra application in mathematics learning for class VIII students at SMP Negeri 3 Sunggal; (2) describe the process of completing student answers related to students' mathematical reasoning by applying the problem based learning model assisted by the Geogebra application. This research is Class Action Research. The subjects in this research were 28 students in class VIII of SMP Negeri 3 Sunggal. The results of the research show that: (1) students' mathematical reasoning can improve after learning by applying the problem based learning model assisted by the Geogebra application where the average student score in the cycle I reasoning ability test was 65.85, increasing to 85.39 in cycle II and classical completeness in the reasoning ability test in cycle I was 16 students (57.14%) increasing to 26 students (87.88%) in cycle II; (2) the process of students' answers in completing the mathematical reasoning ability test is in the good category, this can be seen from the students' answers which have been able to meet the indicators of mathematical reasoning ability. So it is concluded that the application of the Problem Based Learning learning model assisted by the Geogebra application can improve students' mathematical reasoning abilities.

This research applies the PBL learning model with the help of Geogebra software to test the increase in junior high school students' ability to understand mathematical concepts. This research aims to find out whether the application of the PBL learning model assisted by Geogebra software can improve students' ability to understand mathematical concepts. The research method used is Classroom Action Research. The subjects of this research were 29 students in class VII-6 of SMP Negeri 17 Medan. The object of this research is to increase students' understanding of mathematical concepts in set material with the PBL model assisted by Geogebra software. Based on the research results obtained, in cycle I the number of students who completed classical learning was 8 students (27.59%), and 21 students (72.41%) had not yet completed it, with an average class score of 54.87. In cycle II there was an increase in students' ability to understand mathematical concepts, there were 21 students (72.41%) who achieved completeness and 8 students (27.59%) who had not yet completed it, with a class average score of 72.24. The target percentage level of student success based on the second cycle test of understanding mathematical concepts has reached the specified completeness, namely 70% with a KKM of 70. Based on the research results, it can be concluded that the application of the Problem Based Learning (PBL) model assisted by Geogebra software can improve the ability to understand mathematical concepts student.

This research is a Classroom Action Research (PTK) which is carried out in 2 cycles. Before carrying out research or taking action, an initial test is given to measure students' problem-solving ability and at the end of each cycle a problem-solving ability test is given. This study aims to determine how to improve problem solving skills through the application of the Geogebra-assisted Problem Based Learning (PBL) learning model. Students experienced an increase in problem-solving skills, in the initial test the average problem-solving ability was 42.19%. In the first cycle, the test results showed an increase of 57.81%. From the results of the second cycle test also increased to 88.50%. The test results showed an increase in students' problem-solving abilities. Thus, it can be concluded that the application of the Geogebra media-assisted PBL model can improve students' problem-solving abilities.

This study aims to determine: Showing an interactive learning media of mathematics on students' mathematical communication skills as a whole, The magnitude of the influence of using Geogebra-based interactive learning media on mathematical communication abilities based on educational level,  the magnitude of the effect of using interactive mathematical learning media on mathematical communication skills based on previously used interactive learning media, the large influence of the use of interactive learning media plays an important role in systematic mathematical methods, the large effect of the use of interactive learning media on mathematical communication skills is imaginative to mathematical communication based on the mathematical ability that is measured. This study uses the addie model. This sampling technique is highly influential using the Addie model and obtained 20 studies that match the criteria. This data collection technique uses freetest and posttest with the help of Geogebra Classic 6 software and the help of Microsoft powerpoint. The results of this data experiment show that:  overall this interactive learning media has a major influence on students' mathematical communication abilities.

Kontroler PID merupakan kontroler yang banyak dipakai di industry. Terdapat parameter proporsional, integral dan derivative pada kontroler PID. Proses perhitungan dalam PID secara buku teks lebih banyak berisi analisis pengaruh parameter Kp, Ki dan Kd. Proses implementasi perhitungan dirasakan kurang dipahami dengan cepat dan mudah oleh mahasiswa maka dibuat visualisasi untuk menunjukkan proses pada kontroler PID. Proses visualisasi menggunakan GeoGebra untuk menunjukkan proses yang terjadi pada blok perhitungan galar, pengaruh Gain proposal pada blok kontroler proporsional, pengaruh gain pada blok integral dan pengaruh perubahan galat pada blok kontroler derivative. Visualisasi juga dilakukan pada blok elemen control akhir.

Kontroler PID merupakan kontroler yang banyak dipakai di industry. Terdapat parameter proporsional, integral dan derivative pada kontroler PID. Proses perhitungan dalam PID secara buku teks lebih banyak berisi analisis pengaruh parameter Kp, Ki dan Kd. Proses implementasi perhitungan dirasakan kurang dipahami dengan cepat dan mudah oleh mahasiswa maka dibuat visualisasi untuk menunjukkan proses pada kontroler PID. Proses visualisasi menggunakan GeoGebra untuk menunjukkan proses yang terjadi pada blok perhitungan galar, pengaruh Gain proposal pada blok kontroler proporsional, pengaruh gain pada blok integral dan pengaruh perubahan galat pada blok kontroler derivative. Visualisasi juga dilakukan pada blok elemen control akhir.

Penggunaan teknologi dalam peningkatan literasi dan numerasi masih kurang diterapkan secara optimal. Di Sekolah Dasar Negeri Garon, penerapan literasi dan numerasi belum dikolaborasikan dengan teknologi. Adanya aplikasi penunjang literasi dan numerasi belum banyak diperkenalkan tenaga pendidik kepada peserta didik untuk memberikan pengalaman belajar yang lebih baik. Tujuan pengabdian ini adalah untuk memberikan pendampingan belajar guna meningkatkan literasi dan numerasi di SDN Garon dengan mengenalkan aplikasi penunjang literasi seperti Let’s Read dan Quizizz serta aplikasi penunjang numerasi yaitu Geogebra. Pengenalan aplikasi tersebut sekaligus agar dapat membiasakan peserta didik menggunakan smartphone untuk belajar. Hasil dari pendampingan menunjukkan bahwa peserta didik lebih bersemangat dan tertarik untuk belajar mata pelajaran Bahasa Inggris dan Matematika. Peserta didik juga berperan aktif dalam pembelajaran yaitu menggunakan aplikasi penunjang secara langsung sehingga meningkatkan pengetahuan mereka.    

This research aims to describe the analysis result of the use of learning media in the Problem Based Learning model. The methods used in this research is literature study of 6 sources consists of 3 thesis and 3 journals discuss the use of learning media in the Problem Based Learning model in Indonesia published in the span of 2016-2022. From the calculation of the effect size, the average value is 0.79 which is categorized in the medium category. This shows that the use of learning media with Problem Based Learning in mathematics learning had a positive effect on improving the mathematical ability of students and the effect obtained is in the medium category. The mathematical ability could be improved based on the literature study such as student’s mathematical connection ability, student’s mathematical problem soving ability dan student’s mathematical numeracy literacy ability. The type of learning media according this research are animation, geogebra, microsoft power point, fun math book, cabri 3D v2 dan youtube. Hope for further research can be analyzed more deeply by using more sources so the result will be more maximal and varied.