<![CDATA[Purpose of the study: The purpose of the study was to test the feasibility and effectiveness of the Number Puzzle media product developed by the researcher, as an innovation in improving math learning outcomes on the material of the Smallest Common Multiple and Greatest Common Factor. Methodology: This research is a Research and Development (R&D) study with qualitative and quantitative approaches. Researchers used simple random sampling. Data sources consisted of primary and secondary. The research data were obtained from test and then non-test techniques, which include interviews, questionnaires, observations, and a combination of all of them. The aspects measured were learning media, learning outcomes, and learning needs of mathematics subjects. Main Findings: The learning environment is less supportive in the use of concrete learning media with student characteristics, so learning is not effective. Many students have difficulty in understanding math concepts. The main problem is that a variety of learning media has not been used, only in the form of teacher books, student books and student worksheets. Novelty/Originality of this study: The novelty of this research is to develop a product in the form of a number puzzle media (puka). The number puzzle media (puka) is designed in the form of a rectangle, with numbers that can be read clearly, the number puzzle media (puka) is designed with the right and harmonious color selection, the number puzzle media (puka) is equipped with QR-Code, so that the learning atmosphere becomes more active, creative, and fun.]]>
