Learners can acquire metacognitive experiences through metacognitive activities which are commonly characterized regard to a sensitivity on the use of heuristics , learning strategies and any activity that students employ or are asked to employ. Most important, the distinction between metacognition and cognition needs to be acknowledged and considered in namely the use of this approach should be involved with opportunities for students to reflect consciously on the metacognitive experience that accompanies their use of the strategies/heuristics. Therefore, the development metacognition requires that they undertake conscious reflection on the efficacy of the learning processes, cognitive processes and using means of assisting; such as concept maps, reading charts, Venn diagrams, theory-evidence coordination rubrics and inquiry flowcharts which improve and represent students' understandings of science. On the other hand, if one is to accept that metacognitive processes can only happen under conscious awareness, any automatic thinking processes or subconscious metacognitive knowledge will be disregarded , whilst, (e.g., the activity of checking oneself subconsciously) are considered as metacognitive activities which of the cognitive processes. In addition, it is argued that only after an error is detected, rightfully or not, the system becomes alerted, and then overt metacognitive activities can be observed. However, one possibility in which metacognitive activities may happen without particular area of problem-solving that s/he does not require attention and awareness in executing the metacognitive process (e.g., error detection, monitoring, controlling, etc.). In short, it points out that the relationship between metacognition and consciousness is a complex one. According this challenge, Kayashima and Inaba (2003)supposed that cognitive layer and metacognitive layer that metacognitive problem-solving process uses both of them . Furthermore, the metacognitive activity includes observing, evaluating, and regulating the cognitive activity. Hence, during metacognitive activity is needed a learner to recognize the goals of the cognitive