In other word, problem posing activities can stimulates metacognition skills which is called helpful control skills for applying problem.On the other hand, this situation can provide opportunities for engaging pupils in higher level of the hierarchical nature of knowledge including "Analyzing, Evaluating ,and Creating"(Anderson & Krathwohl, 2001) which encourage higher-order-thinking among learners. This view indirectly informed that the mathematical problem posing tasks have the most important following criteria for promoting high-order-thinking: 1) Students should be involved in the transformation of knowledge and understanding. 2) Teacher should create a communicating encouraging them to verify, question, criticize, and assess others 'arguments, engaging in constructing knowledge through various processes, and generating new knowledge through selfexploration. 3) Students need to be aware that they must be an active learner taking initiatives and responsibilities in their own learning. drill From the other point of view, this innovat