Science concept formation has a long history in early childhood educational research. Most of the studies in the field focus on the way children form science concepts as preschoolers. However, less is known about the nature of science concept formation for children under 3 years of age. This study explores how early childhood teachers create the conditions for the formation of science concepts for infants. The research design drew on the "Conceptual PlayWorld" model, a collective form of practice for learning and development through imagination and play. Thirteen infants with a mean age of 1.2 years (1 year and 3 months) participated in the study. Visual methods were used for digital data collection and analysis. The analysis drew upon the cultural-historical concepts of the interrelation between everyday and scientific concepts and the concept of real and ideal forms. The analysis foregrounded four key elements for introducing science concepts in infants' everyday educational reality: 1) making meaningful interrelations between the everyday concept and the scientific concept, 2) consistently using scientific language, 3) using appropriate analogies, and 4) using early forms of a scientific method. The overall findings open new understandings about the nature of science concept formation of infants, informing pedagogical practice in this under-researched area.