International Group for the Psychology of Mathematics Education (PME)

Proceedings of the International Group for the Psychology of Mathematics Education · Volume 1

The E-textbook as a Platform for Instrumental Orchestration: Linking Design and Classroom Enactment

Ismael Almahdi, Osama Swidan

Ben-Gurion University

49th Annual Conference of the International Group for the Psychology of Mathematics Education, PME 2026Helsinki27 July 2026 - 1 August 2026pp. 35–42ISSN 2790-36482026Scopus conference code 336559
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Abstract

This paper proposes conceptualising the mathematics e-textbook as a platform for instrumental orchestration. Building on the instrumental approach, we treat the e-textbook as the locus where didactical configurations and intended exploitation are constructed through design and enacted in classroom performance. We illustrate that through a case study of a secondary teacher who designed and taught an e-textbook chapter on parallelograms. Data include observations of the design process, an interview, and a lesson recording. The analysis shows how the chapter structured a progression from a video-based introduction to GeoGebra-supported verification. The paper contributes a conceptual extension of instrumental orchestration that links e-textbook design and classroom enactment within a single analytical framework.

Keywords

E-textbooksTeacher as designInstrumental orchestration

Recommended citation

Almahdi, I., & Swidan, O. (2026). The E-textbook as a Platform for Instrumental Orchestration: Linking Design and Classroom Enactment. In Krzywacki H., Hähkiöniemi M., Haataja E., Hannula M.S., Hästö P. (Eds.), Proceedings of the International Group for the Psychology of Mathematics Education, Volume 1 (pp. 35–42). Psychology of Mathematics Education (PME). ISSN 2790-3648.
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