Appendix A. Descriptive overview of included studies

This appendix offers a structured descriptive profile of the 46 studies reviewed in this SLR. The matrix summarises essential bibliographic and contextual information to support understanding of the research landscape and the diversity of implementations observed. It includes:· Study identification and metadata (reference code, title, authors, publication year, journal, and source database).· Geographical and educational context (country, educational level, and setting).· Participant information (sample size and learner profile, including age, English proficiency, and digital competence when available).· Methodological characteristics (study design and type).· Virtual learning environment (VLE) description, where reported.

本附录为本次系统文献综述（Systematic Literature Review, SLR）中纳入的46项研究提供了结构化的描述性概况。该矩阵汇总了关键的文献计量与背景信息，旨在助力理解当前的研究格局及所观察到的实施多样性。其内容包括：· 研究标识与元数据（参考编码、标题、作者、发表年份、期刊及来源数据库）；· 地理与教育背景（国家、教育阶段及场景）；· 参与者信息（样本量及学习者特征，含年龄、英语水平及可获取的数字能力数据）；· 方法学特征（研究设计与类型）；· 虚拟学习环境（VLE）描述（若有报告）。