Effective use of spreadsheets in CALL classrooms can not only assist with basic classroom management tasks but also support the creation of interactive, dynamic lessons tailored to language learning. This workshop demonstrates practical applications for spreadsheet programming in instructional contexts. While it highlights Mac Numbers, due to its unique layout and native integration with Pages and Keynote for seamless content creation across Apple platforms, the workshop emphasizes transferable skills relevant to cross-platform tools such as Google Sheets and Microsoft Excel. Given the widespread market penetration of the Apple iPhone in Japan, educators can also distribute Numbers-based files compatible with most student devices. Attendees will explore how Numbers Formula Language, in conjunction with AppleScript and JavaScript, can be used to automate grading, design language-focused games, manage classrooms, and enhance learner engagement. Although Mac Numbers is the primary tool demonstrated, the workshop's pedagogical strategies are adaptable to other spreadsheet environments, making it relevant to all educators interested in integrating programmable spreadsheets into CALL. All attendees are encouraged to bring smartphones (any OS welcome), as the session includes interactive, QR code-based activities.