摘要：项目式学习是一种推动学生主动参与、促进学生全面发展的学习模式之一,可以培养学生数学应用能力和高阶思维能力。本文通过分析中学探究活动实施的困境,并结合初中数学探究活动案例,探讨在大概念引领下如何开展初中数学跨学科项目式学习,得出其实施策略和教学设计,从而有效激发学生的学习兴趣,提高学生的实践操作能力、团队协作能力和创新能力。Project-based learning is one of the learning models that promote students’ active participation and comprehensive development, which can cultivate students’ mathematical application ability and high-order thinking ability. This article analyzes the difficulties in implementing inquiry activities in middle schools, and combines with case studies of junior high school mathematics inquiry activities to explore how to carry out cross-disciplinary project-based learning under the guidance of major concepts in junior high school mathematics. Subsequently, more standardized implementation strategies and teaching design for project-based learning under the guidance of major concepts in junior high school mathematics are developed. This effectively stimulates students’ interest in learning, and improves their practical operation ability, team collaboration ability, and innovation ability.