This research is motivated to improve students’ achievement in learning Mathematics. It was based on teaching and learning Matrix at the first grade students’ majoring in Multimedia of SMK Mandalasari Cikancung by using conventional teaching which students became passive. It influenced the result of learning by using conventional teaching which students got the score below passing grade. One of alternative learning that was applied to improve students’ learning Mathematics was collaborative learning method with Each one teach one technique. This research used a classroom action research (CAR) which it was aim to analyze the students’ achievement in learning process, analyze the result of students’ learning Mathematics, and analyze the students’ responses toward the use of collaborative learning method with Each one teach one technique. The participant of this research was all of the first garde students’ majoring in Multimedia of SMK Mandalasari Cikancung academic year 2015/2016. The instrument of the research was formative test, students and teacher’ observation sheet, questionnaire, and journal. Based on the result of data, it showed that the result of learning Mathematics got improvement and students had positive responses toward the use of collaborative learning method with Each one teach one technique.