adults and children, and also among the children, in a public daycare of Rio de Janeiro city. Based on the daycares history in Brazil, the medical and sanitation perspectives in those institutions, and the hygienical bias of adults and children within the daycare are discussed, as well as its consequences under the perspective of care as an instrumental and mechanical act. As a counterpoint, the study brings Foucault`s point of view about care (from his greco-roman culture study), understood as taking care of oneself, requiring a permanent work about oneself, questioning oneself, in an ethical and humanitarian dimension. The field research was made in a nursery inside a daycare in Rio de Janeiro. The ethnographic perspective guided the permanency on the field, where deep descriptions about interactions and practices, and pictures and interviews with professionals directly involved with the babies were made. Based on Marcel Mauss studies about corporal techniques, the research mapped the children`s bodies capabilities and utilities day by day, as well as different modalities of care (automatic, disciplinary, and as attention to oneself and the children) which were arisen. Power devices present every day were reviewed, as cribs, high chairs, and the kids tasks. The research has emphasized the way the bodies are modeled and the children`s tries when conducted by the adults, as well as the children`s strategies, inventions of new relationship modes, and contacts among them and with the objects. Thus, the cribs become mediators of exchanges, and the high chairs are turned into concealment. Bakhtin`s concept of act and responsive attitude opened another way to identify the expression and life among the kids in the object offers, imitation, and in the gesture of pointing movements that create and start contact. The photography - methodological resource of the research - , provided visibility to the children`s movements. The review and observation of pictures during the interviews with professionals made it possible for them to see their new work and the babies in new ways.