<![CDATA[This study aims to develop a Student Worksheet (LKM) based on the Creative Problem Solving (CPS) model, integrated with deep learning, covering the topic of relations and functions, that is valid and practical for facilitating the mathematical problem-solving skills of Phase D students. This is a development study utilising the 4D model, which comprises the define, design, develop, and disseminate stages. The research instruments consisted of validation sheets and student response questionnaires. Product validation was conducted by three validators: two mathematics education lecturers and one mathematics teacher. Product practicality was evaluated through a small-group trial involving 9 students and a large-group trial involving 28 students. Validation results showed an average percentage of 95.35%, placing it in the "highly valid" category. The small-group trial yielded an average student response of 90.04%, while the large-group trial yielded 90.54%; both results fall into the "highly practical" category. Based on these findings, it is concluded that the CPS-based, deep learning-integrated Student Worksheet on relations and functions meets the criteria for high validity and practicality, making it suitable for facilitating the development of mathematical problem-solving skills among Phase D students.]]>
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