Contributions to society

1. Head, Guru Belajar Matematika: Implementasi Kurikulum Merdeka pada Pembelajaran Matematika Melalui Proyek Pemodelan di Sekolah Kristen Immanuel Pontianak (2024)

2. Speaker, Persiapan Ujian Tulis Berbasis Komputer untuk MGMP Matematika SMA Kota Pontianak (2023)

3. Speaker, Pelatihan Persiapan UTBK-SNBT untuk SLTA BPK Penabur (2023)

4. Head, Guru Belajar Matematika: Kegiatan Pendampingan Penulisan Matematis, Pemecahan Masalah Matematika, dan Penyusunan Soal Berbasis HOTS untuk SMP dan SMA St Angela Bandung (2023) 

5. Jury, Lomba Poster Science Fest, UNPAR (2022)

6. Head, Guru Belajar Matematika: Pembelajaran Matematika Berbasis Perangkat Lunak untuk SMP dan SMA St Angela Bandung (2022) 

7. Team Member, Siswa Belajar Matematika: SMA Trinitas Bandung (2021)

8. Jury, Lomba Essay Science Fest Online, UNPAR (2021-2022)

9. Trainer, Organized by Oxford University Press (2019-now)

10. Trainer, Organized by PEARSON (2017-now)

11. Jury, InaM2C, Organized by Center for Innovative Learning (2017-now)

12. Trainer of Math Olympiad (2002-now) 

13. Judge, Kompetisi Matematika (KOMAT), Organized by Himpunan Matematika, UNPAR (2002-now) 

14. Facilitator, School Visit, Organized by READI (2017-2020)

15. Team Member, Ibu belajar Matematika: SDN Bandung Baru 1, SDN Bandung Baru 2, SDN Ciumbuleuit 1, SDN Ciumbuleuit 4 (2012-2020)

Editorial board: 

• International Conference on Mathematics and Mathematics Education 2023 (ICMMEd) 

• PLOS ONE - indexed and abstracted in SCOPUS 

• Majalah Ilmiah Matematika dan Statistika (MIMS) - accredited SINTA 3 

• Pattimura International Journal of Mathematics (PIJMath)

Reviewers: 

• Mindanao Journal of Science and Technology - indexed and abstracted in SCOPUS Q4 

• Malaysian Journal of Fundamental and Applied Sciences - indexed and abstracted in SCOPUS Q4

• ICOMSIE (International Conference on Mathematics, Science, Informatics, and Education), Fakultas Pendidikan Matematika, IPA, dan Teknologi Informasi UPGRIS Semarang (23-24 Agustus 2023) 

• 1st IARC (Indonesia Actuarial Research Conference), satellite event of The 9th SEAMS-UGM Conference Proceedings, Yogyakarta (22-24 July 2023)

• Jambura Journal of Biomathematics - Universitas Negeri Gorontalo - accredited SINTA 2

• Jurnal Diferensial - Universitas Nusa Cendana -  accredited SINTA 5

• Frontiers in Applied Mathematics and Statistics - indexed and abstracted in SCOPUS Q3

• Jurnal Elemen - Universitas Hamzanwadi - accredited SINTA 2 

• Jurnal Matematika - Universitas Udayana - accredited SINTA 4 

• E-jurnal Matematika - Universitas Udayana - accredited SINTA 5

• BAKTI: Jurnal Pengabdian kepada Masyarakat - LLDikti Wilayah XII Maluku dan Maluku Utara

• Barekeng: Jurnal Ilmu Matematika dan Terapan - Universitas Pattimura - accredited SINTA 2 

• Discrete Dynamics in Nature and Society - Hindawi - indexed and abstracted in SCOPUS Q3 

• Suska Journal of Mathematics Education - UIN Sultan Syarif Kasim Riau - accredited SINTA 4

• Model Assisted Statistics and Applications - IOS Press - indexed and abstracted in SCOPUS Q4

• Asian Journal of Probability and Statistics 

• Asian Journal of Microbiology and Biotechnology 

• British Journal of Mathematics and Computer Science  

Scientific Committee: 

• The 7th Seminar Nasional Matematika dan Pendidikan Matematika (SENATIK), 26 November 2022 

Technical Program Committee: 

• The International Conference on Computer in STEAM Education (COMSTEAMED) 2024, Department of Research and Technology, STIPRAM Institute, Yogyakarta, 9-10 Desember 2024