Aim: to validate low-fidelity, handmade, realistic simulators as a breakthrough educational technology for guiding puerperae about breastfeeding. Method: this is an exploratory, cross-sectional study, with a quantitative-qualitative approach, divided into two stages: the first stage a piece of applied research and the second a quasi-experimental study. An intentional sample of 24 puerperae staying in rooming-in facilities of a public maternity hospital was taken. The sample was divided into two groups of 12: a control group and an experimental group. Results: the scientific literature showed biological and cultural difficulties regarding breastfeeding, such as with regard to breastfeeding position and holding, cracks in the nipples, the anatomy of the nipple, breast engorgement, the Brazilian culture of "weak milk"/not enough milk and cramping related to breastfeeding. Breastfeed handling simulators were created and validated to facilitate the learning process. Conclusion: the use of simulators as educational technology has a positive impact on the sample, reducing the difficulties related to breastfeeding. Practical implications: the use of these simulators was ground-breaking, having low production and maintenance costs, also in terms of changing the concepts and practices of the puerperae involved concerning the breastfeeding process.