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The goal of the research to describe of development of card media with scientific approach on mathematics lesson, and show the practical and effectivity of card media with scientific approach. The research's model use Borg and Gall model. The steps of the research are : analyze of potential and problem, the collect of data, product design, design validation and revision of design. Trying of test was conducted to know the effectivity of card media. The instrument use observation sheet, questionnaire, and observation sheet of test's trying. The design of validation's result show that media is valid and it can apply on the teaching learning. The result of test's trying show that card media is practical to use as mathematics learning's media. Beside that, the student classical of total's percentage after do the test show that media is effective to use as teaching learning.

THE DEVELOPMENT OF CARD MEDIA WITH SCIENTIFIC APPROACH ON JUNIOR HIGH SCHOOL OF MATHEMATICS LESSON