nagashima [at]


(Nov 2022) Moved to Germany to start my TT position at Saarland University!

(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)

Create your own tape diagrams!

AI-based tutoring software is a powerful tool for supporting individual learning. However, prior studies suggest that teachers also want to customize parts of the software — in other words, AI-based tutoring software should ideally allow for flexibility in various ways. As an effort to add flexibility to our diagram tutors, we developed a tool that teachers can use to generate their own tape diagrams for whatever equation you type in, as far as it meets certain criteria (e.g., no negative numbers).

*Click on the “Diagram Generation” button.