This research was conducted to produce an ethnomathematics-based electronic student worksheet product (E-LKPD) using the anyflip application for rectangular and triangular material that obtained validity, practicality, and effectiveness so that it was suitable for use by students. The method used in this research is research and development using a four-D model consisting of define, design, development, and disseminate stages. To measure E-LKPD so that it is feasible to use, namely using interview test sheets for educators and students, expert validation sheets to measure product validity, student learning outcomes tests to measure product effectiveness, and student response questionnaires to measure product practicality. The results obtained in research and development are obtaining a percentage of validity of 95.7%, practicality of 82.88%, and effectiveness of 81.00%. Therefore, the development of E-LKPD based on ethnomathematics using the anyflip application has good and proper quality so that it can be used by class VII students as learning companions in the learning process.