In the current innovation in teaching mathematics, fostering students' collaborative problem-solving skills is one of the key objectives for improving learning quality. In teaching probability, designing appropriate learning situations enables students to engage with the content effectively and provides opportunities for teamwork, discussion, debate, and joint development of optimal solutions. This paper examines the concept of collaborative learning, proposes a process for designing instructional situations to develop collaborative problem-solving skills, and concretizes this process by designing probability teaching activities for seventh-grade students.