As researchers with a design background, we frequently employ design methods, such as participatory design and design probes, in our research practices. Accordingly, we are interested in exploring how our work can contribute back to the design research community, especially in children’s contexts. Drawing on our empirical design-based research and design practices, we will reflect on the lessons we have learned while designing with and for young learners. We will further extend these methodological reflections to broader HCI research, such as how design, as a research method, can facilitate knowledge investigation in HCI.