The purpose of this research to produce a cooperative model of physics learning that is feasible (valid, practical, and effective) by using PhET media to reduce the potential for misconception of Dynamic Electricity material in student grade X at State Senior High school. Development of learning material use the 4D model and trial use one group pretest-posttest design. The Data collection used observation , test (pretest-posttest) and questionnaire methods. The data analysis using quantitative descriptive, qualitative descriptive and certainty of response index. (1) Validity of learning material in terms of (a) validation of instruments are valid categorized, (b) Readbility of book and hand out are easier categorized for student’s; (2) The practicality of the learning material in terms of: (a) The implementation of the lesson plan is very good, (b) the activity of the students is active, (c) the obstacles during learning can be overcome; (3) The effectiveness of learning material in terms of: (a) Student responses are very good, (b) decrease of potential misconceptions for each student and question are high categorized, increase for the number of students who know concepts and increase for learning outcame by clasical and individual. The conclusion of this research that The learning of cooperative model based PhET media are feasible (valid, practical, and effective) to reduce the potential misconception of high school students.

Keywords : PhET Media, Misconception Reduction.