The Community Service (PkM) team from Mercu Buana University, Yogyakarta, consisting of Nuryadi, S.Pd.SI., M.Pd., and Muhammad Irfan Rumasoreng, M.Pd., collaborated with the PkM team from Yogyakarta State University to conduct a series of community service activities for the Mathematics Education Study Program at UMBY. This activity included a seminar on "Improving Student Achievement," presented by UNY lecturer Mr. Heru Sukoco, S.Si., M.Sc., and participants from student organizations at Mercu Buana University, Yogyakarta, on June 24, 2025.

The collaboration between Yogyakarta State University (UNY) and Mercu Buana University, Yogyakarta (UMBY), was renewed to strengthen institutional ties through a joint academic activity aimed at improving the quality of mathematics learning at the university. This guest lecture, titled "Strengthening Mathematical Logic in the Probability Theory Course," was held on September 17, 2025, in the Mathematics Education Study Program at UMBY.

This guest lecture featured two speakers from the UNY Community Service (PKM) team: Ms. Siti Kholifah, S.Si., M.Pd., and Dr. Dra. Mathilda Susanti, M.Si. Both are academics and practitioners of mathematics education who have long been involved in developing learning based on logic, reasoning, and mathematical representation. Their presence demonstrates UNY's commitment to supporting the improvement of the quality of mathematics learning in various educational institutions, including UMBY.

In her presentation, Ms. Siti Kholifah emphasized that logical skills are the primary foundation for understanding probability theory. She stated that many students' difficulties with probability are rooted in weak formal reasoning skills, particularly in identifying relationships between mathematical statements, determining sample spaces, and systematically constructing logical arguments. The material was presented through interactive discussions, case studies, and examples of the application of logic to solving probability problems.

Meanwhile, Dr. Mathilda Susanti reinforced the material by presenting various learning strategies that lecturers can implement to integrate mathematical logic into probability theory teaching. She explained that strengthening logic is not only crucial for students' academic success but also forms the basis for higher-order thinking skills needed in the era of artificial intelligence (AI). With a constructivist approach and an emphasis on reasoning, students can be trained to think more critically, analytically, and systematically.

This guest lecture received high enthusiasm from students and lecturers. The lively discussion reflected the students' need for a stronger understanding of logical concepts to support optimal learning outcomes in probability theory courses. The UMBY lecturers also appreciated the method presented, as it provided a new perspective in designing learning that emphasizes the thinking process rather than simply delivering material.

The collaboration between UNY and UMBY is not limited to guest lectures; it is designed to be ongoing and sustainable. The series of collaborations will continue with activities to strengthen the philosophical foundations of the curriculum in the UMBY Mathematics Education Study Program. These activities will feature speakers from UNY, Prof. Dr. Marsigit, M.A.; from the Head of the Yogyakarta MGMP, Suyanto, S.Pd.; and from UMBY, the Head of the Community Service Team, Nuryadi, S.Pd.SI., M.Pd.; this collaboration aims to ensure that the implemented curriculum aligns with the latest developments in mathematics education, national competency standards, and the demands of the 21st century.

Through this collaboration, UNY and UMBY hope to build a mathematics learning ecosystem that is more adaptive, innovative, and based on strengthening students' essential competencies. This collaboration is also expected to serve as a model for synergy between universities in improving the quality of higher education, particularly in mathematics education, which plays a crucial role in developing a generation of logical and critical thinkers. With this initiative, both institutions affirm their shared commitment to continuously creating a positive and sustainable academic impact for students, lecturers, and the mathematics education ecosystem in Yogyakarta and Indonesia more broadly.