This study aims to determine the validity of animation-based teaching material of social arithmetic topic animation-based teaching material of social arithmetic to improve students' understanding of mathematical concepts. The method used in this research is R&D research with Borg and Gall development model which is limited to 5 stages, namely potential and problems, finding information, product design, design validation, and design improvement. By involving 3 experts namely 2 material experts and 1 media expert. The results of the study show that animation-based teaching material of social arithmetic are very valid with an average percentage of material experts at 93.5% and 96% of media experts.
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