<p><em>In the 21st century, almost all aspects of education require thinking skills, especially critical and creative thinking. However, up till now students still find it difficult to achieve good critical and creative thinking skills because of the lack of encouragement to improve these skills during the learning process in the classroom. There are many learning models being developed. One of them is problem posing. This study aims to describe student activities in the problem posing model, the indicators used to identify critical and creative thinking skills, and why problem posing can improve students' thinking skills. After conducting a literature review, theoretically problem posing can help students to improve their critical and creative thinking skills through a series of stages in the problem posing model.</em></p>