Objective: to build and validate an educational technology on the promotion of breastfeeding for schoolchildren.
Methods: a methodological study was developed through a bibliographic survey, situational diagnosis, creation of illustrations, layout, design and texts, validation of the material with the help of expert judges and target audience.
Results: the content judges enabled the validation of the material with an overall Content Validity Index of 90%, the judges of the design Suitability Assessment of Materials of 90.4% and the target audience with a 95.6% agreement. The readability percentage proved to be excellent, with an overall score of 100%.
Conclusion: the educational technology proved to be a valid and reliable instrument to promote a breastfeeding culture among schoolchildren.