Incorporating IYPT problems into large-enrollment introductory physics labs for inquiry-based learning

In 2010, the International Young Physicists' Tournament (IYPT) was introduced to China as an exploratory practical physics activity for young students. Over the past decade, accompanied by annual competitions, students have gradually come to appreciate this research and learning approach around open-ended problems. Since 2018, we have established a lab focused on inquiry-based learning around the annual IYPT problems and redesigned introductory physics laboratory course, serving a large number of first-year students. Since then, the teaching team has continuously refined the teaching process and arrangements. This article focuses on introducing the entire teaching program and student feedback for the redesigned introductory physics laboratory that incorporating IYPT Problems with inquiry-based physics experimental teaching methods to serve a large number of students. We hope to provide valuable references for other institutions.