一句话：在块编程环境中加入调试提示，帮助初学者更高效地发现并修复错误。
块编程通过可视化界面降低了语法错误的门槛，被广泛用于向初学者和低龄学习者介绍编程；但语义错误与运行时错误依然存在，初学者往往难以定位和修复。为此，作者开发了 Blocks-DeFix——一个面向 Arduino 与移动机器人的块编程环境，在传统错误反馈之上叠加引导式调试提示，并面向高中学生开展混合方法可用性研究。实验将获得调试提示的实验组与仅获传统错误反馈的对照组进行比较：尽管样本量小导致统计显著性有限，结果显示提示组在相近时间内修复了更多错误，并且与程序的交互更频繁；访谈数据也表明学习者的理解、信心与满意度有所提升。该研究说明，将调试提示集成到块编程环境中，有助于支持新手应对常见编程困难。
Block-based programming is widely used to introduce programming to novices and young learners by reducing syntax errors through a visual interface. Yet the absence of syntax errors does not prevent all errors (e.g., semantic and runtime), and novices often struggle to identify and fix them. This study examines whether debugging hints improve the usability of block-based environments by supporting learners during error correction. We developed Blocks-DeFix, a block-based environment for Arduino and mobile robots that augments traditional error feedback with debugging hints, and evaluated it with high school students. A mixed-methods usability study compared a Test Group receiving debugging hints with a Control Group receiving traditional error feedback. Although statistical significance was limited by a small sample, findings suggest debugging hints increase effectiveness and engagement: participants receiving hints solved more errors in similar timeframes and interacted more with their programs. Interview data indicated improved understanding, confidence, and satisfaction. The study highlights the potential of integrating debugging hints to support novices facing common programming challenges.