Research on early childhood robotics education often focuses narrowly on teaching young children STEM (science, technology, engineering, and mathematics) concepts and skills. In this qualitative case study, our research team examined what happened when we worked with young children (age 7) and combined the technologies of robotics education with an inquiry approach, that is, an opportunity for students to collaboratively identify a problem arising from their own lived experiences and build a robot to solve it. We found that the process of children's problem identification was dialogic, not only with peers and teachers but also with materials, as they defined and refined problems based on interactions with peers and objects. As this study was conducted at an economically disadvantaged public school in the Southern United States, we argue that early childhood robotics education has a great potential to engage young children in STEM learning in a personally meaningful manner and that an instructional approach fostering children's inquiry and project-based learning through their problem finding and problem posing is effective in making STEM accessible to students from diverse backgrounds.