<![CDATA[This study aims to: a) Test the validity of Canva-based interactive mathematics learning media on whole number materials in elementary school ; and b) Test the practicality level of the learning media according to student responses. This study is a type of Research and Development (R&D) using the ADDIE Development model consisting of five stages: Analysis, Design, Development, Implementation, and Evaluation. The Research subjects were fourth-grade elementary school students. The instruments used included validation sheets and practicality questionnaires. The validity test results from material and media experts obtained an average percentage of 87.58%, falling into the "Very Valid" category. The practicality test results through student response questionnaires obtained an average percentage of 95.04%, categorized as "Very Practical". Based on these results, the "Walacah" media is effective as a cognitive mediation tool to improve students' understanding of whole numbers up to 10,000.]]>
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