随着智能手机的迭代更新，手机智能终端已渗透到人们学习和生活的方方面面，因功能强大、高效快捷，为中学地理实践活动提供了有力的技术支持。本文以校园日晷探究活动为案例，构建“目标—设计—实施—评价”的活动教学环节，开展“准备—实施—总结”的探究流程，探索手机智能终端在文献检索、定位测量和绘图建模等环节的应用路径，多维度评价其成效，为促进中学地理实践活动的创新教学提供参考。

With the iterative upgrading of smartphones, mobile intelligent terminals have permeated all aspects of people’s study and daily life. Owing to their powerful functions, high efficiency and convenience, these terminals provide robust technical support for middle school geography practical activities. Taking the exploration of campus sundials as a case study, this paper constructs the teaching process of the activity featuring the framework of "goal-setting, design, implementation and evaluation", and carries out the inquiry procedure of "preparation, execution and summary". It explores the application paths of mobile intelligent terminals in such links as literature retrieval, positioning and measurement, as well as mapping and modeling, and evaluates their eff ectiveness from multiple dimensions, thereby providing a reference for advancing the innovative teaching of middle school geography practical activities.