Conference Presentations and Proceedings

(*) denotes research supervisee
Plenary and Invited Lectures

  1. Ng, O. (2025, Dec). Conceptualizing integrated STEM education through the lens of constructionism and boundary crossing: Plenary Lecture at the 2025 Conference on STEM in Mathematics Education in Korea. Chungbuk National University.
  2. Ng, O. (2025, Oct). Data-ing and AI Literacy in School Mathematics: A New Frontier for Mathematics Education Research. Plenary Lecture at The 3rd International Exchange Forum for Mathematics Educators. University of Macau.
  3. Ng, O. (2025, Jul). Computational thinking as a catalyst for change: Reflecting on what, how, and for whom we teach mathematics in the digital age. Invited Lecture at the 9thICMI-East Asia Regional Conference on Mathematics Education (EARCOME 9), Seoul National University.
  4. Ng, O. (2025, Jul). Mathematics in the digital age: How computational thinking drives transformative learning. Plenary Lecture at International Conference on Mathematics and Mathematics Education (ICMME) 2025. University of Peradeniya.
  5. Ng, O. (2024, Jul). From programming-rich to AI-literate and data-science-enhanced mathematics education. Invited lecture at The 15th International Congress on Mathematical Education, Sydney.
  6. Baccaglini-Frank, A., Jones, K., Lew, H.-C., Ng, O., Venkat, H. (2021, July). Will the the Fourth Industrial Revolution transform or disrupt mathematics education?. Plenary Panel Discussion at the 44th Conference of the International Group of Psychology in Mathematics Education.
Conference Presentations and Conference Proceedings

  1. Tsui, M. Y., Ng, O., Lee, Y. P. (2024). Examining the Efficacy of a Physical Board Game for Geometric Transformations. Proceedings of the 18th European Conference on Games Based Learning, 789-798. https://doi.org/10.34190/ecgbl.18.1.2987
  2. Ng, O. (2024, Jul). From programming-rich to AI-literate and data-science-enhanced mathematics education. Invited lecture at The 15th International Congress on Mathematical Education, Sydney.
  3. Zhang, Y., Ng, O., Liang, B., Wong, G. K. W. (2024, Jul). Young learners’ gestural routine development in manipulative-based number discourse. Paper presented at The 15th International Congress on Mathematical Education, Sydney.
  4. *Cui, Z., Ng, O., & C. M. Koo. (2024). Learning coordinate geometry with Scratch: task design from an embodied and APOS approach. In T. Lowrie, A. Gutiérrez, & F. Emprin (Eds.), Proceedings of the 26th ICMI Study Conference (Advances in Geometry Education) (pp. 345-352). ICMI.
  5. *Ye, H., Ng, O., & *Cui, Z. (2024, Jul). Multiple Pathways for Developing Solutions in Programming-based Mathematical Problem-solving Processes. The 15th International Congress on Mathematical Education, Sydney.
  6. Ng, O., Liang, B., Cui, Z., Ye, H., & Leung, W. L. (2024, Jul). Integration of computational thinking in K-12 mathematics education: Workshop on programming-based mathematical task designs. The 15th International Congress on Mathematical Education, Sydney.
  7. *Ye, H., Ng, O., & *Cui, Z. (2023, Dec). A thematic analysis exploring flexibility in programming-based mathematical problem solving. The 31st International Conference on Computers in Education (ICCE 2023). Matsue, Japan.
  8. *Yeung, W. L., & Ng, O. (2023, Jul). Characterizing touchscreen actions for action-based embodied learning in K-12 mathematics instruction [Poster Presentation]. The 16th International Conference on Technology in Mathematics Teaching (ICTMT 16). Athens
  9. *Chan, Y. M., & Ng, O. (2023, July). Mathematical literacy demonstrated in programming-based mathematical problem solving: the case of compound interest [Paper Presentation]. The 16th International Conference on Technology in Mathematics Teaching (ICTMT 16). Athens
  10. Ng, O., Leung, A., & *Ye, H. (2023, Jul). Hong Kong ethnic minority students’ multimodal discourse about triangles in dynamic geometry environments [Poster Presentation]. The 16th International Conference on Technology in Mathematics Teaching (ICTMT 16). Athens
  11. *Weng, X., & Ng, O. (2023, May). Investigating Student Teacher Self-Regulated Learning during Reflective Video Incorporated Professional Development. Paper Presentation at the International Conference on Learning and Teaching for Future Readiness 2023, The Education University of Hong Kong.
  12. *Weng, X., & Ng, O. (2022, Dec). Learning support for prospective teacher reflective video integration from the perspective of Self-Determination Theory. Paper Presentation at the Teaching and Learning Innovation Expo 2022, The Chinese University of Hong Kong.
  13. Liu, M., Ng, O., Leung, S., & Wan, S. W.-Y. (2022, Jun). Developing a faculty-wide video-based pedagogical framework to enhance reflective video-engagement for virtual teaching and learning. Paper Presentation at CUHK Community of Practice Symposium of Education Innovation and Technology 2022.
  14. Tsoi, D., Chan, A., Law, M., Liu, A., Ho, T., Liang, B., & Ng, O. (2022, Feb). Integration of Programming, Problem Solving and Recreational Mathematics for a Computationally Enhanced Mathematics Education. Paper Presentation at Hong Kong Mathematics Education Conference 2021/22.
  15. *Cui, Z., Ng, O., & Jong, M. S. Y. (2021). Integration of programming-based tasks into mathematical problem-based learning. In M. M. T. Rodrigo et al. (Eds.), Proceedings of the 29th International Conference on Computers in Education. Asia-Pacific Society for Computers in Education.
  16. Ng, O. (2021). Doing mathematics with 3D pens: Five years of research on 3D printing integration in mathematics classrooms. Paper Presentation at International Symposium on 3D Printing in Mathematics Education [Virtual]
  17. *Yeung, W.L., Ng, O., So, H.-S.C., Kwo, C.-M.T. (2021, Aug). Affective dimensions of STEM education for gifted students: The case of empathy map. Presentation at the 24th Biennial World Conference by World Council for Gifted and Talented Children
  18. Jones, K., & Ng, O. (2021). The 4th Industrial Revolution is a marketing hype; it is educators, working with stakeholders, that can transform the teaching and learning of mathematics. In M. Inprasitha, N. Changsri, Boonsena (Eds.), Proceedings of the 44th Conference of the International Group for the Psychology of Mathematics Education, Vol. 1 (pp. 67-75). Khon Kaen, Thailand: PME.
  19. Ahn, A., Brown, J., Coles, A., Le Roux, K., Mellone, M., Ng, O., Solares, A. (2021, July). Researching mathematics curriculum innovation in complex, changing, uncertain times. Working group paper presented at the 2021 Virtual Meeting of the IGPME.
  20. Ng, O., & Leung, S. (2021, July). Online-streaming based service-learning for prospective teachers: Responses for teacher education in the new normal. E-Poster presented at the International Symposium and Expo on Service-Learning and Socially Responsible Global Citizenship (Online).
  21. Ng, O. (2020, Dec). Exploring an innovation to support preservice teachers’ video-based noticing in the context of technology-enhanced instructions. Long paper presented at the Annual Meeting of AREA [iPoster Session].
  22. Brown, J., Coles, A., Helliwell, T., Le Roux, K., Mellone, M., Ng, O., Solares, A. (2020, July). Innovating the mathematics curriculum in times of change: Towards local and global relevance. Working group paper presented at the 2020 Virtual Meeting of the IGPME.
  23. Ng, O. (2019, Dec). Developing computational thinking and mathematical problem solving through digital Making. Paper presented at the International Conference on Advances in STEM Education 2019. Hong Kong.
  24. Ng, O. & Ni, Y. (2019). The relationship between discourse moves and authority structures in mathematics classrooms. In M. Graven, H. Venkat, A. Essien & P. Vale (Eds.) Proceedings of the 43rd Conference of the International Group for the Psychology of Mathematics Education (Vol. 4, p.169). Pretoria, South Africa: PME
  25. Ng, O. (2019). Hands-on Making: Doing STEM in Mathematics Classrooms. In K.L. Wong, Y.L. Li, K.W. Yau., & K.W. Wong (Eds.). Proceedings of the Hong Kong Mathematics Education Conference (pp.108-121). HKAME: Hong Kong
  26. Ng, O. (2018). In-service mathematics teachers’ video-based noticing of technology integration. In E. Bergqvist, M. Österholm, C. Granberg, & L. Sumpter (Eds.). Proceedings of the 42nd Conference of the International Group for the Psychology of Mathematics Education (Vol. 5, p. 118). Umeå, Sweden: PME
  27. Ting, F., Ng, O., & Lam, C. (2018). Active learning in an undergraduate calculus class using interactive online whiteboards. Proceedings of the 8th ICMI-East Asia Regional Conference on Mathematics Education (p.165). Taipei, Taiwan.
  28. *Wong, W., & Ng, O. (2018). Learning algebraic expressions through rich tasks with learners’ generated examples. Proceedings of the 8th ICMI-East Asia Regional Conference on Mathematics Education (p.164). Taipei, Taiwan.
  29. *Ho, C.O., Ng, O. (2017). Investigating secondary students’ concept images on division algorithm and relation between these concept images to early learning experience. Proceedings of the 41st Conference of the International Group for the Psychology of Mathematics Education, Vol 2 (p.67). PME: Singapore.
  30. Ng, O., & *Chan, T.H. (2017). Visualizing 3D solids with 3D printing technology. Proceedings of the 41st Conference of the International Group for the Psychology of Mathematics Education, Vol 2 (p.30). PME: Singapore.
  31. Ng, O. (2017, April). A non-deficit view for studying bilingual learners engaging in mathematical activities with touchscreen technology. Long paper presented at the Annual Meeting of AERA. San Antonio, Texas, USA.
  32. Ng, O., & Sinclair, N. (2016, July). Drawing in space: Doing mathematics with 3D pens. Paper presented at the 13th International Congress on Mathematical Education. Hamburg, Germany.
  33. Ng, O. (2015). Saming, reification and encapsulation in dynamic calculus environment. In N., Amado, & S. Carreira (Eds.). Proceedings of the 12th International Conference on Technology in Mathematics Teaching (pp.473-481). University of Algarve, Faro, Portugal.
  34. Ng, O. (2015). Bilinguals’ non-linguistic communication: Gestures and touchscreen dragging in calculus. In T.G. Bartell, K.N. Bieda, R.T. Putnam, K. Bradfield, & H. Dominguez, H. (Eds.) Proceedings of the 37th annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, pp.526-533. East Lansing, MI: Michigan State University.
  35. Ng, O., & Ferrara, F. (2015). A materialist conception of early algebraic thinking. In X. Sun, B. Kaur, J. Novotna (Eds.), Proceedings of International Commission on Mathematical Instruction (ICMI) Study 23 (pp.550-558). Macau SAR, China.
  36. Ferrara, F., & Ng, O. (2014). Mathematical activities in a social learning framework: How multimodality works in a community of practice. In P. Liljedahl, C. Nicol, S. Oesterle, & D. Allan (Eds.). Proceedings of the Joint Conference of PME 38 and PMENA 36 (Vol. 3, pp.65-72). Vancouver, Canada: PME.
  37. Ng, O. (2014). The interplay between language, gestures, dragging, and diagrams in bilingual learners’ mathematical communications. In P. Liljedahl, C. Nicol, S. Oesterle, & D. Allan (Eds.). Proceedings of the Joint Conference of PME 38 and PMENA 36 (Vol. 4, pp.289-296). Vancouver, Canada: PME.
  38. Ng, O. (2014). ‘They are getting married!’ Towards a dynamic, functional understanding of symmetry in primary school. In P. Liljedahl, C. Nicol, S. Oesterle, & D. Allan (Eds.). Proceedings of the Joint Conference of PME 38 and PMENA 36 (Vol. 1, pp.197-198). Vancouver, Canada: PME.
  39. Ng, O., & Sinclair, N. (2013). Gestures and temporality: Children’s use of gestures on spatial transformation tasks. In A.M. Lindmeier, & A. Heinze. (Eds.). Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (Vol. 3, pp. 361-368). Kiel, Germany: PME
Selected Invited Presentations and Knowledge Transfer Activities

  1. Ng, O. (2025, Oct). Directions for Research and Practice on Data-ing and AI Literacy in School Mathematics. Invited Lecture at Mathematics Würzburg Colloquium, University of Würzburg.
  2. Ng, O. (2025, Jul). Computational thinking as a catalyst for change: Reflecting on what, why, how, and for whom we teach mathematics in the digital age. Invited Lecture at EARCOME 9, Seoul National University.
  3. Ng, O. (2025, Jun). Enhancing the secondary-tertiary mathematics transition toward STEM talent development in the Greater Bay Area. GBA Education Forum, The Chinese University of Hong Kong.
  4. Ng, O., & Ye, H. (2025, Jan). Integrating computational thinking in mathematics education: Envisioning, opportunities, and challenges. Invited workshop at Shanghai Qingpu World Foreign Language School.
  5. Ng, O. (2024, Dec). Improving programming skills and mathematical problem-solving for STEM teaching and learning. Invited lecture at the University of Macau.
  6. Ng, O. (2024, Nov). 提升STEM教學中的編程能力和數學解難-專業發展工作坊. Public lecture, The Chinese University of Hong Kong.
  7. Ng, O. (2024, Jul). From programming-rich to AI-literate and data-science-enhanced mathematics education. Invited lecture at The 15th International Congress on Mathematical Education, Sydney.
  8. Ng, O. (2024, June). From “learning” outcome/trajectory to “making” outcome/trajectory: A computational thinking perspective on school mathematics learning. Invited seminar at Simon Fraser University.
  9. Ng, O. (2024, May). Task design for enhancing computational thinking in school mathematics. Invited guest lecture at Simon Fraser University.
  10. Ng, O. (2024, May). Early Researcher Series: How to present your research. Invited online seminar for the International Group of Psychology in Mathematics Education.
  11. Ng, O. (2024, May). From “learning” outcome/trajectory to “making” outcome/trajectory: A computational thinking perspective on school mathematics and STEM learning. Invited seminar at the University of Lisbon.
  12. Ng, O. (2024, May). Envisioning a computationally enhanced mathematics education: Emerging perspectives, tools, and design. Invited seminar at the University of Torino.
  13. Ng, O., Leung, A., & Ye, H. (2024, Mar). Exploring Computational Thinking as a Boundary Object between Mathematics and Computer Programming for STEM Teaching and Learning. Webinar by ZDM-Mathematics Education.
  14. Ng, O. (2024, Feb). From “learning” outcome/trajectory to “making” outcome/trajectory: A computational thinking perspective on school mathematics learning. Invited presentation at the University of Tsukuba.
  15. Ng, O. (2023, Dec). Current trends and future directions in education: Fostering Competence and Attitudes in the fourth industrial revolution. Public lecture at the Chinese University of Hong Kong.
  16. Ng, O. (2023, Dec). From Technology-rich to Computationally-enhanced Mathematics Education: Research, Practice, and Future Directions. Invited presentation at the University of Macau.
  17. Ng, O. (2023, Sep). Research on the integration of programming and school mathematics: Implications for computationally enhanced mathematics education. Invited seminar at East China Normal University.
  18. Ng, O. (2022, June). Reactions to “On The Origins of Geometry and the Idea of Crafting Mathematics” By Ricardo Nemirovsky. Invited online presentation at the University of Torino.
  19. Ng, O. (2022, March). Doing mathematics with 3D pens: Five years of research on 3D pen integration in mathematics classrooms. Invited online graduate seminar for University of California, Berkley.
  20. Ng, O. (2022, February). Introduction to technology-rich mathematics pedagogies: Theories and implications on practice. Invited online graduate seminar for University of Colombo.
  21. Ng, O. (2021, April-May). Transformative technologies or transformative pedagogies? Workshops on using technologies for conceptual mathematics teaching and learning. Invited workshop series for Hong Kong Association of Mathematics Education.
  22. Ng, O. (2021, January). Research and trends in mathematics teachers’ professional development. Invited presentation at Annual General Meeting of Hong Kong Association of Mathematics Education.
  23. Ng, O. (2021, January). Using videos to support STEM teachers’ professional development regarding technology integration. Invited presentation at PALMS Virtual Symposium 2021.
  24. Ng, O. (2020, September). Catering to learning diversity in the mathematics classroom. Invited presentation at Fung Kai Liu Yun Sum Memorial School on Professional Development Day.
  25. Ng, O. (2019, October). Learning as Making: Using 3D technologies to support the teaching and learning of secondary school mathematics. Invited presentation at David Li Kwok Po College.
  26. Ng, O. (2019, August). Implementing a ‘Learning as Making’ pedagogy in school mathematics. Invited presentation at Fung Kai Liu Yun Sum Memorial School on Professional Development Day.
  27. Ng, O. (2018, June). Supporting visualization in STEM: 3D printing. Invited presentation at the Mini-symposium on TEAL in Tertiary STEM Education, Hong Kong Polytechnic University, Hong Kong.
  28. Ng, O. (2017, June). Using emergent technologies to enhance the learning and teaching of STEM in Hong Kong’s secondary schools. Invited seminar presented at the Chinese University of Hong Kong, Hong Kong.
  29. Ng, O. (2017, February). From classroom teaching to classroom researching: Reflections, sharing and perspectives from a teacher-researcher. Invited research seminar presented at the Simon Fraser University, Burnaby, BC, Canada.
  30. Ng, O. (2016, June). “3D pens” and 3D printing: Research, ideas and discussion. Invited seminar presented at the Imperial Oil Science Technology Engineering and Mathematics (IOSTEM) 2016 Research Symposium, Vancouver, BC, Canada.
  31. Ng, O. (2016, January). Language, gestures and touchscreen-dragging in school calculus: Bilinguals’ linguistic and non-linguistic communication. Invited research seminar presented at the Chinese University of Hong Kong, Hong Kong.
  32. Ng, O. (2015, October). Doing MUCH more with your tablet PC, iPads, Androids, and student-owned technology. Presentation at the 54th Annual Northwest Mathematics Conference, Whistler, BC, Canada.
  33. Ng, O. (2014, October). FTC: Explained! Teaching pre-calculus and calculus visually, conceptually, and dynamically. Presentation at the Annual Conference of the British Columbia Association of Mathematics Teacher, Guilford Park Secondary, Surrey, BC, Canada.
  34. Ng, O. (2013, October). Introduction to dynamic mathematics environment: Designing applets and lessons that foster dynamic thinking and multiple representations in pre-calculus and calculus. Presentation at the Annual Conference of the British Columbia Association of Mathematics Teacher, Steveston London Secondary, Richmond, BC, Canada.