Google DeepMind 塞拉利昂试验：AI 辅助教学显著提升数学成绩
原标题：Measuring the impact of learning with AI in Sierra Leone and beyond
AI 摘要
Google DeepMind 在塞拉利昂开展的一项预注册试验显示，其 Guided Learning 工具（基于 LearnLM）作为教学辅助，能显著提升学生数学成绩，增益相当于 1.2 至 2.5 年的学习进度。该工具通过苏格拉底式提问促进学生概念理解，而非直接提供答案，且教师仍处于教学核心。研究团队计划在全球开展更多随机对照试验，并发布教师培训指南和试验手册以推广经验。
正文节选
The results from this pre-registered trial suggest that AI can be a powerful pedagogical partner — not by replacing teachers, but by augmenting their reach. This study is part of our ongoing effort to build a global evidence base for the impact of AI on teaching and learning. Beyond the answer engine: protecting critical thinking A common concern is that generative AI could become a shortcut for students, potentially bypassing the challenging yet essential cognitive effort required for deeper le