Which skill is NOT typically integrated into project-based learning for ESL?

Project-based learning for ESL (English as a Second Language) is designed to engage learners in meaningful tasks that help them develop language skills through real-world application. The focus is on enhancing the four primary language skills: listening, reading, speaking, and writing. In this context, listening, reading, and speaking are integral to the collaborative nature of projects, as they involve communication among students and facilitate language acquisition in a practical setting.

Mathematics, while it can certainly be incorporated into some projects, is not a core language skill that is explicitly aimed at improving language proficiency. Instead, it serves more as a content area that may complement a project rather than directly fostering ESL language development. As such, the specific focus of project-based learning in ESL is primarily on the language skills essential for communication and interaction, making mathematics the least connected to the immediate goals of enhancing English language proficiency.