Research on students’ perceptions and understanding of technology has shown that students have a narrow view of technology: for example, technology is often manifested in students’ descriptions as artefacts or objects. This study investigates the ways in which students’ understanding of how technology is manifested expands during a series of classroom activities in technology. The study was conducted at a compulsory primary school with eight-year-old students. The data (video and audio recordings) were collected in small-group interactions and in whole-class discussions. In the interactions, the students utilised self-taken photographs to visualise their understanding and perception of technology’s manifestations: object, activity, volition, and knowledge (Mitcham in Thinking through technology. The path between engineering and philosophy, The University of Chicago Press, 1994). Based on their prior knowledge, the students perceived technology as contemporary electrical artefacts. As they engage in a technology project, they develop and expand their understanding of how technology is manifested, as well as relate different manifestations to one another. The findings indicate that students achieve a more advanced understanding of technological manifestations compared to only discussing each manifestation of technology separately.