In this diagram, we can understand Polya's problem-solving model. It consists of four steps. The first step is identifying the problem, then creating an executable plan, carry out the plan, and looking at the solution. Using this diagram, students can write keywords in the "understand the problem" section; In the second section, students can select a strategy and use this space to organize and clarify the thought process. In the third section, they can write the keywords that will allow them to stay on track as per the plan. In the final section, students can examine the solution step by step.