This study aimed to develop and validate a storybook in teaching Mathematics among kindergarten pupils. The Research and Development (R&D) method was used in this study. The researcher used the Evaluation Instrument for Topics to be Included in the DE/ODel Module and the Evaluation Rating Sheet for DE and ODel, Modules provided by the College of Education of Pampanga State Agricultural University. There were ten Kindergarten teachers who identified the essential and non-essential topics for the storybook and five experts who validated the storybook in terms of content, design/format, and pedagogy. The validators strongly agreed that the storybook is an effective tool in teaching Mathematics among Kindergarten pupils. Moreover, the storybook is a learning material that can be easily understood by the pupils. Keywords: storytelling, kindergarten pupils, teaching Mathematics, storybook.