The aim of the study is to address, from feminist anthropology, participation children in the subsistence economy of rural husbandry households in three generations. SE proposes to proceed on the assumption that social practices, based on the sexual division of labour; which contribute to the reproduction of rural husbandry households, change faster than collective subjectivity on generic allocation of traditional roles. With the help of the ethnography and stories of some life stories, looking at changes in the activities of the girls and boys responding to the adjustments required by agricultural cri diseases, to the processes of incorporation of globalisation and the new constraints of Mexican social policy. Despite these changes reflected in the daily life of mazahua conclude that certain traits persist. identities about gender roles, where girls are associated with activities reproductive: the house, and the productive children: the mill.