Research

Open notes on text + task difficulty modeling

Zone of Proximal Development in Language Learning

Published: 2026-03-17 | Authors: CEFR.AI | Framework Note

The Zone of Proximal Development (ZPD) is one of the most useful ideas in language education, but it is often described too vaguely to guide real decisions. In practical terms, ZPD is the space between what a learner can do independently and what they can do with support. For CEFR.AI,...