(Nov 2021) Proposed my Ph.D. dissertation and I’m on the job market!!

(June 2021) Our ISLS paper was nominated for Best Design Paper!

(April 2021) We will be at ED Games Expo! Here’s our entry.

(Dec 2020) Won the Fred Mulder Open Education Practice Award!

(Nov 2020) Gave a talk at Keio Univ.

(Nov 2020) Won an AECT award!

(Nov 2020) Presented at OpenEd20

(Oct 2020) Made a tape diagram template (available under CC-BY-NC)


Hello! I am a PhD Candidate in the Human-Computer Interaction Institute (HCII) at Carnegie Mellon University, where I am advised by Professor Vincent Aleven. Before joining CMU, I completed my Master’s degree in Learning, Design, and Technology at Stanford Graduate School of Education, working with Professor Candace Thille on Open Learning Initiative at Stanford.

My work lies at the intersection of the learning sciences, human-computer interaction, and cognitive science. I co-design intelligent technologies with educators and learners and use them as a platform to understand and support human learning. My research has looked at topics such as:

  • Co-designing novel instructional and interaction strategies with teachers to help children reason with, and learn from, visual representations in an intelligent system
  • Designing an educational game to support engaging and effective learning in math
  • Re-conceptualizing classroom research as a mutual, equitable learning opportunity between researchers and practitioners
  • Supporting learners’ autonomous, self-regulated choice making in an intelligent system

I work with stakeholders to find real-world problems, design and evaluate tools, strategies, and digital technologies in a variety of learning environments. I am also an activist working in the area of open education as a member at Creative Commons Japan and as an OER Research Fellow at Open Education Group.

Prior to coming to the US, I spent two years working at the Center for Open Education at Hokkaido University (Japan) as an instructional designer, following my graduation from International Christian University in Tokyo where I received my bachelor’s degree in Education.


Anticipatory diagrammatic self-explanation
Drag&drop equation solving
Screen Shot 2020-04-20 at 11.38.08 AM
Global Open Policy Report


  • Nagashima, T., Britti, J., Wang, X., Zheng, B., Turri, V., Tseng, S., & Aleven, V. (2022, forthcoming).
    Supporting engaging and effective algebra learning with gamified intelligent tutoring software. In
    Proceedings of the 17th European Conference on Technology Enhanced Learning (EC-TEL2022).
  • Nagashima, T., Ling, E., Zheng, B., Bartel, A. N., Silla, E. M., Vest, N. A., Alibali, M. W., & Aleven, V. (2022). How does sustaining and interleaving visual scaffolding help learners? A classroom study with an Intelligent Tutoring System. In Proceedings of the 44th Annual Meeting of the Cognitive Science Society (CogSci2022). Cognitive Science Society. [paper]
  • Nagashima, T., *Tseng, S., *Ling, E., Bartel, A. N., Vest, N. A., Silla, E. M., Alibali, M. W., & Aleven, V. (2022). Students’ self-regulated use of diagrams in a Choice-based Intelligent Tutoring System. In Proceedings of the Annual Meeting for the International Society of the Learning Sciences (ISLS2022), Hiroshima, Japan.

*Please see my CV for paper links