有效且可扩展的数学支持：AI导师对加纳数学成绩影响的证据
Effective and Scalable Math Support: Evidence on the Impact of an AI- Tutor on Math Achievement in Ghana
AI总结：
本研究通过加纳11所学校约1,000名学生的随机对照实验，证明基于WhatsApp的AI数学导师Rori在8个月内显著提升数学成绩（效应量0.37），并因其适配低带宽设备而具备向中低收入国家推广的潜力。
摘要：
本研究评估了Rori——一款可通过WhatsApp访问的AI驱动对话式数学导师——对加纳11所学校约1,000名3至9年级学生数学成绩的影响。每所学校被分配到实验组或对照组；对照组学生继续接受常规数学教学，而实验组学生在常规数学教学之外，每周使用Rori进行两次每次30分钟的学习，持续8个月。我们发现实验组的数学增长分数显著更高，效应量为0.37，且结果具有统计显著性（p < 0.001）。Rori能够在低带宽数据网络上的基础移动设备上运行，这一事实使该干预措施具有强大的潜力，可支持其他中低收入国家（LMICs）的个性化学习，在这些国家，笔记本电脑拥有率和高速互联网——许多以视频为中心的学习平台的先决条件——仍然极为有限。虽然研究结果应谨慎解读，因为它们仅报告了干预措施第一年的情况，且未来研究有必要更好地了解成功实施所需的条件，但这些结果确实表明，利用人工智能的基于聊天的辅导解决方案可以为全球数百万学生提供一种具有成本效益的方法来提升学习成果。
英文摘要：
This study evaluates the impact of Rori, an AI powered conversational math tutor accessible via WhatsApp, on the math performance of approximately 1,000 students in grades 3-9 across 11 schools in Ghana. Each school was assigned to a treatment group or control group; the students in the control group continued their regular math instruction, while students in the treatment group engaged with Rori, for two 30-minute sessions per week over 8 months in addition to regular math instruction. We find that the math growth scores were substantially higher for the treatment group with an effect size of 0.37, and that the results were statistically significant (p < 0.001). The fact that Rori works with basic mobile devices on low-bandwidth data networks gives the intervention strong potential to support personalized learning on other low-and-middle-income countries (LMICs), where laptop ownership and high-speed internet - prerequisite for many video-centered learning platforms - remain extremely limited. While the results should be interpreted judiciously, as they only report on year 1 of the intervention, and future research is necessary to better understand which conditions are necessary for successful implementation, they do suggest that chat-based tutoring solutions leveraging artificial intelligence could offer a costeffective approach to enhancing learning outcomes for millions of students globally.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
