<![CDATA[The purpose of this study is to analyze the validity, practicality, and effectiveness of differentiated learning devices for improving mathematical computational thinking skills and motivation of high school students. To determine the improvement in mathematical computational thinking skills and motivation of high school students in using differentiated learning devices, reviewed from learning styles and multiple intelligences. This research method is Research & Development. The development model used is the 4D model., four researches of SMA Swasta Pembangunan. The time of this research will be carried out in the 2025/2026 academic year. The population in this study is all grade X students of SMA Swasta Pembangunan, while the sample in this study is class X-1 of 30 students. The results of this study are; 1. The validity of the differentiated learning device reviewed from the learning styles and multiple intelligences that have been developed is in the "valid" category, 2. The differentiated learning device reviewed from the learning styles and multiple intelligences that have been developed has met the criteria for the practicality of the learning device, 3. The differentiated learning device reviewed from the learning styles and multiple intelligences that have been developed has met the criteria for the effectiveness of the learning device. This can be seen from the completeness of students' mathematical computational thinking abilities in the first trial, classical completeness from the results of students' mathematical computational thinking abilities was 56% (18 students) and in the second trial it was 87% (26 students). 4. Students' mathematical computational thinking abilities using the differentiated learning device reviewed from the learning styles and multiple intelligences that have been developed have increased.]]>
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