Early childhood represents a pivotal stage for developing scientific literacy. Microbiology offers a unique context to nurture curiosity and reasoning by linking the unseen microbial world to children’s everyday experiences. Within the Ciencia Maravilla science communication initiative, we have designed an educational program introducing core microbiological concepts: the microscopic nature, diversity, ubiquity, and ecological roles of microorganisms. This approach seeks to correct persistent misconceptions and move beyond anthropocentric views that focus solely on human health, fostering instead a balanced ecological understanding of the microbial world.