With facilitation of advanced technologies, design and application of smart become promising research issues in education. Although it is potential for students to learn geometric in authentic contexts, there were still lack of studies addressing smart learning issue in authentic context for geometry. This study aim to propose an app, called SmartUG, to support students smartly to consolidate geometry understanding and learning through enriching experience of exploring and applying related geometry surrounding. There were four smart mechanisms proposed in SmartUG (direction guidance, learning progress, object recognition and answer feedback) to guide students' measuring and applying geometry smartly and meaningfully in authentic contexts. A total of 83 fifth-grade students participated in this experiment and were divided into three groups, an experimental group that learned with smart mechanisms, a control group that learned without smart mechanisms and a traditional control group that learning with traditional teaching approach. Basically, experimental group outperformed control group and traditional teaching group in term of geometry ability and estimation ability, which means students benefited from proposed SmartUG. Moreover, students showed positive attitude and high intention to use toward SmartUG. Students should be provided more chances to learn geometry smartly in authentic contexts with SmartUG. It is potential to future studies to implement more smart mechanisms to support students learning in authentic contexts. Moreover, the learning system can get smarter and smarter when the learning system gets more and more input data from students' use.

中文翻译：

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真实情境下智能机制及其对小学生几何学习的影响

随着先进技术的推动，智能的设计和应用成为教育领域有前景的研究课题。尽管学生在真实环境中学习几何是有潜力的，但仍然缺乏针对几何真实环境中智能学习问题的研究。本研究旨在提出一款名为 SmartUG 的应用程序，以巧妙地支持学生通过丰富探索和应用相关几何周围的经验，巩固对几何的理解和学习。SmartUG 提出了四种智能机制（方向指导、学习进度、物体识别和答案反馈），以指导学生在真实环境中巧妙而有意义地测量和应用几何。共有83名五年级学生参加了本次实验，分为三组，使用智能机制学习的实验组、不使用智能机制学习的对照组和采用传统教学方式学习的传统对照组。实验组在几何能力和估计能力方面基本上优于对照组和传统教学组，这意味着学生受益于提议的 SmartUG。此外，学生对SmartUG表现出积极的态度和较高的使用意愿。应为学生提供更多学习几何的机会使用 SmartUG 在真实环境中巧妙地处理。未来的研究有可能实施更智能的机制来支持学生在真实环境中学习。而且，当学习系统从学生的使用中获得越来越多的输入数据时，学习系统可以变得越来越智能。