学习者教导新手：一种鼓舞人心的替代评估方法
Learners Teaching Novices: An Uplifting Alternative Assessment
AI总结：
提出通过教学进行评估（AVT）的形成性评估新方法，让学习者辅导新手以展示理解。随机对照试验表明，AVT显著提升学习者考试成绩与学习动力，且天然防作弊，有望替代传统考试。
摘要：
我们提出并实施了一种名为“通过教学进行评估”（Assessment via Teaching, AVT）的形成性评估新方法，学习者通过辅导更 novice 的学生来展示他们对 CS1 主题的理解。AVT 相比传统评估形式具有显著优势：它以服务他人为中心，对参与教学的学习者极具回报感。此外，教学极大提升了学习者自身对材料的理解，并对接受免费一对一辅导的 novice 学生产生了巨大的积极影响。最后，这种评估形式天然难以作弊——这是大语言模型时代评估的关键属性。我们在一所 R1 大学的 CS1 课程中，对学习者使用 AVT 进行了随机对照试验。学习者为参加同一课程在线滞后版本的更 novice 学生提供辅导。结果表明，在课程考试前进行 AVT 的学习者在若干问题上的表现比班级平均分高出 20 至 30 个百分点。此外，与参加模拟考试的学生相比，AVT 学习者更享受这一体验，且为辅导做准备的可能性是前者的两倍。我们认为 AVT 是一种可扩展且鼓舞人心的形成性评估方法，未来有望取代传统考试。
英文摘要：
We propose and carry-out a novel method of formative assessment called Assessment via Teaching (AVT), in which learners demonstrate their understanding of CS1 topics by tutoring more novice students. AVT has powerful benefits over traditional forms of assessment: it is centered around service to others and is highly rewarding for the learners who teach. Moreover, teaching greatly improves the learners' own understanding of the material and has a huge positive impact on novices, who receive free 1:1 tutoring. Lastly, this form of assessment is naturally difficult to cheat -- a critical property for assessments in the era of large-language models. We use AVT in a randomised control trial with learners in a CS1 course at an R1 university. The learners provide tutoring sessions to more novice students taking a lagged online version of the same course. We show that learners who do an AVT session before the course exam performed 20 to 30 percentage points better than the class average on several questions. Moreover, compared to students who did a practice exam, the AVT learners enjoyed their experience more and were twice as likely to study for their teaching session. We believe AVT is a scalable and uplifting method for formative assessment that could one day replace traditional exams.
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。
