<![CDATA[Abstract – Laboratory demonstration tools is learning medium that teachers use as an alternative to improve students’ understanding. Founded that students understand the concept that is taught but some students still have difficulty in solving the problem. This study aims to describe the profile of students' thinking processes presented through laboratory equipment by analyzing student behavior as learning takes place based on information processing theory. This research is a naturalistic qualitative research in which the research takes place naturally and not conditioned. Subjects in this study were 2 students of SMKN in Salatiga with high and low academic category. The result of the students' thinking process descriptions show that subjects with high academic categories are able to process the stimuli in selective attention more fully from subjects with low academic categories, the two subjects perform a perception process against the stimulus correctly, the rehearsal process performed by subjects with high academic categories stimuli more frequently than subjects with low academic categories, subjects with high academic category are able to perform the encoding process well while the subject with low academic category were not, and subjects with high academic category can perform the process of retrieval smoothly while subjects with academic low category have difficulty difficulties. The lack ability to process information can decrease the ability to solve problems. The suggestion for educators is that they must provide a complete record of learning outcomes and provide conceptual application for learning objectives to be achieved.]]>
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