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This Community Partnership Program (PKM) aims to improve the competence of mathematics teachers at Madrasah Tsanawiyah (MTs) in Lumajang Regency in developing ethnomathematics-based teaching materials integrated with Augmented Reality (AR) technology. This program was initiated due to the minimal use of local culture in mathematics learning and the low ability of teachers to develop innovative teaching materials. The activity was carried out in four main stages: socialization, training, technology application, and mentoring and evaluation. The training included an introduction to the concept of ethnomathematics, the preparation of differentiated teaching materials, and the creation of AR-based learning media using Unity 3D, Blender, Geogebra, and Vuforia. The results of the activity showed an increase in teachers' understanding of the concept of ethnomathematics and their ability to integrate the local cultural values of Lumajang into mathematics learning. In addition, teachers successfully produced contextual AR-based interactive teaching materials in line with the spirit of the Merdeka Curriculum. This activity also strengthened collaboration between lecturers, students, and teachers of the MTs Wilker III Mathematics MGMP and became a model for continuous training in the development of innovative learning media based on local wisdom and digital technology.

The application of Mastery Learning in Olympiad mentoring at Darussalam Islamic Junior High School was carried out using a classroom action research model involving 20 students from grades 8 and 9. The mentoring process followed a cyclical structure consisting of planning, action, observation, and reflection, supported by observation techniques, tests, and documentation. The implementation of the mastery learning model effectively improved students’ mathematics learning outcomes, as shown by a significant increase in mastery levels: 65% before the intervention, 75% after the first cycle, and 90% after the second cycle. In addition, the average learning score rose from 71 in the first cycle to 87 in the second cycle, reflecting substantial progress in understanding and problem-solving abilities. These results indicate that Mastery Learning not only enhances students’ mathematics performance but also strengthens their readiness and confidence to compete in the National OSN competition, demonstrating the model’s positive contribution to academic achievement and Olympiad preparation.

Following the journey of mathematics at the elementary school level, students often hear complaints when they have to explore concepts such as addition, subtraction, multiplication, and division. In such a dilemma, the need for innovation becomes even more pressing, as a way to carve out a vibrant next generation. The author sees that in learning mathematics, grade 3 students at SD Negeri 4 Citeureup lack enthusiasm for mathematics because this subject is often considered difficult. Overall, the process of implementing community service with a focus on education uses the jarimatics method to increase enthusiasm or motivation in studying mathematics for Citeureup 4 public elementary school students. The results of community service activities include the following: (a) achievement of the target number of participants. (b) the accuracy and skill of students working on multiplication problems. (c) achievement of activity objectives. After a series of training activities were carried out, finally we provided feedback questions from students. Do they feel happy and more motivated in learning mathematics? They all agree that they are happy and feel more motivated. To increase students' interest and motivation in learning mathematics, teachers should use good and effective methods to move and motivate students to be active in learning mathematics.

Community Service (PKM) is a form of the Tridharma of Higher Education. This PKM is proposed to carry out socialization and educational activities. The basic material in learning mathematics at the elementary school level starts with addition, subtraction, to multiplication and division of numbers. But in the multiplication and division material, many students experience difficulties. Actually there are many learning methods that are used to make it easier for students to understand and memorize multiplication. One of them is the jarimatics method. In this method students are not required to memorize but students are taught to be able to understand multiplication by using their limbs, namely their fingers. With jarimatika students will learn multiplication easily and fun. The method used in this PKM is education and hands-on practice of the jarimatics method in multiplication problems. As a result, students become more aware of multiplication and feel happy with the method being taught, because it makes it easier for them to calculate multiplication.  

Visual aids are tools that can stimulate students' thoughts, skills, attention and willingness so that they can encourage the learning process in students, besides that using teaching aids can provide space for students to be actively involved in every learning process. In fact, in Toyang State Junior High School, mathematics learning has not used visual aids. The props created and used are number pattern boxes made of used cardboard, which are designed in such an attractive way to form several number pattern boxes consisting of: square, rectangular and triangular boxes. This visual aid is used in the learning process for class VIII students of SMP Negeri Toyang. This training aims to help foster the creativity of students and improve students' ability to use teaching aids. The result of this training is that students get new experiences by learning to use visual aids, this can be seen from the enthusiasm of the students who are very large and students more easily understand the concept of number patterns