In the Problem Solving Approach, the teaching objective is not just to answer but to develop new ideas of mathematics based on what has been already learned. For the task for the Problem Solving Approach in the textbooks with slider marks, there are questions regarding “think about how to ....” which are aimed at showing the recommended problematic for children. By answering these questions, it is hoped that the children do not just get the answer but are also able to find general ideas in mathematics. Based on this problematic question, we can teach children the value of mathematics, which is not limited to solving given tasks but enables children to develop mathematics by themselves.