The Finnish case contributing to the international DEPTH study was carried out within the Technology Education "NOW!" project at the University of Oulu. Nineteen project teachers participated in the study. The recent revision of the Finnish Basic Education Curriculum with the introduction of the cross-curricular theme "Humans and Technology" provided the contextual framework for the study. The graphic tool called the "DEPTH tool" was introduced to the teachers to help and support them in their professional thinking of their technology teaching in this period of transition. Qualitative research methods were employed in the study. The teachers' responses to the study indicate that it was appropriate and helped them to make sense of the situation. The DEPTH tool appeared to work well with most of the teachers. Even though some of the teachers used the tool to present a list of activities they have carried out in their technology teaching, most of them understood that they could use the tool in a deeper way to enhance their professional reflection. Five categories of teachers emerged from the data. The categories indicate different aspects and levels of teachers' professional reflection, especially in relation to curriculum revision and the cross-curricular theme Humans and Technology. Interestingly, some of the teachers who showed a thoughtful level of reflection did not pay very much attention to the revised curriculum.