This paper highlights the role of multiple solutions to a problem and posing new problems in cultivating students' creative thinking in mathematics. Based on a model of cultivating students’ creativity by one problem with several solutions, changes, and applications in an inquiry-based mathematics classroom, the study analyzes one expert Chinese mathematics teacher who takes a simple plane geometry problem as an example to guide students how to find different solutions and pose new problems in inquiry-based classroom. These activities can be used to cultivate students’ creative thinking ability in mathematics.