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This study aims to improve the English speaking skills of students in class XI DPIB B at SMK Negeri 2 Malinau through the application of the Problem-Based Learning (PBL) model. The background of this research is the low speaking ability of students, which is characterized by limited vocabulary, lack of confidence, and low participation during English learning activities. The research employed Classroom Action Research (CAR) using the Kemmis and McTaggart model, which was conducted in two cycles consisting of planning, action, observation, and reflection stages. The research subjects were 32 students of class XI DPIB B. Data were collected through speaking performance tests and observations of students’ learning behavior during the implementation of the PBL model. The collected data were analyzed using quantitative and qualitative techniques. The results showed a significant improvement in students’ speaking skills, as indicated by the increase in the average score from 64.00 in the pre-test to 68.75 in cycle I and 76.00 in cycle II. Furthermore, the percentage of learning completeness increased from 25% in the pre-test to 81.25% at the end of cycle II. Observational data also revealed positive changes in students’ learning behavior, including higher participation, increased motivation, and greater confidence in speaking English. These findings demonstrate that the Problem-Based Learning model is effective in improving students’ English speaking skills and learning engagement.

This community service program, entitled English for Global Communication: Strengthening Intercultural Competence among Polytechnic Students, was led by Doris Yolanda Saragih, S.Pd., M.Pd., in collaboration with Clementine and Josh, guest lecturers from the United Kingdom. The activity took place at Politeknik Bisnis Indonesia on September 1, 2025, involving 60 students across two interactive learning sessions. The program aimed to enhance students’ ability to communicate effectively in global settings by integrating language proficiency, cultural awareness, and practical communication strategies. The learning process applied a communicative and experiential approach, featuring discussions, simulations, and task-based learning to develop students’ speaking fluency, cross-cultural sensitivity, and confidence. The participation of native English speakers provided authentic exposure to international discourse and cultural perspectives, which enriched the overall learning experience. Evaluation results indicated a significant improvement in students’ oral communication skills, vocabulary use, and intercultural understanding. Furthermore, participants demonstrated higher motivation and readiness to apply English in academic and professional contexts. Overall, this community engagement initiative effectively contributed to enhancing global communication competence and supported the institution’s mission to cultivate globally competitive and culturally aware graduates.

The workshop "To Be A Powerful Public Speaker" is designed to improve the public speaking skills of SMA Negeri 14 Samarinda students, especially new members of the Student Council. This activity aims to increase confidence, mastery of communication techniques, and interaction with the audience. The training method includes theory, practice, and evaluation, involving speakers with various topics, such as the basics of public speaking, speaking techniques in broadcasting, and tips for becoming a professional MC. The training results showed that 85% of participants felt more confident in public speaking, increased mastery of intonation and gestures, and the ability to build better relationships with the audience. The hands-on and practical approach to this training ensures that participants understand the theory and can apply it in real life, particularly in their leadership roles. These workshops positively impact students' communication skills, supporting their personal and professional development.