<![CDATA[This study aimed to develop and examine the feasibility, practicality, and effectiveness of Canva-based poster media integrated with Project-Based Learning (PjBL) to improve students’ understanding of the Unitary State of the Republic of Indonesia (NKRI) and foster patriotic attitudes. This research employed a Research and Development (R&D) approach using the 4D development model, consisting of Define, Design, Develop, and Disseminate stages. The subjects were 37 sixth-grade students. Data were collected through expert validation sheets, pretest-posttest instruments, patriotic attitude questionnaires, and teacher response questionnaires. The developed media was categorized as Very Feasible, with an average validation score of 97%, comprising 97% from material experts, 96% from media experts, and 98% from language experts. The media was also categorized as Very Practical, with a teacher response score of 96%. Its effectiveness in improving students’ understanding of NKRI was indicated by an N-Gain score of 0.69, categorized as medium-high. Furthermore, 100% of students demonstrated patriotic attitudes in the Good and Very Good categories. These findings indicate that Canva-based poster media integrated with PjBL is a feasible, practical, and effective learning medium for civic education and can support meaningful learning while strengthening students’ understanding of NKRI and patriotic attitudes.]]>
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