This study investigates preschool teachers' considerations for including digital tools in science teaching to develop children's learning of science content. Due to the ongoing digitalisation and demands in society, the utilisation of digital tools has increased significantly in educational settings. Recent research about digital tools in early childhood education focuses on various aspects of technology implementation. However, there is a research gap in which considerations underpin preschool teachers' choices of what, why and how they integrate digital tools into science teaching. The data generation was conducted by different methods. The reflection tool Content Representations (CoRe) is used to make the preschool teachers' considerations explicit when reflecting on planning science teaching regarding specific science content formulated as Big Ideas. Further, video stimulated recall interviews capture the preschool teachers' considerations on their interactions with children in science activities and using digital tools. The Refined Consensus Model (RCM) of Pedagogical Content Knowledge (PCK) was employed as a theoretical framework for analysing and interpreting data around an entire teaching cycle. Some of the teachers' considerations for including digital tools involve accessing children's learning, making the abstract concrete and stimulating children's engagement and learning. Further, the findings indicate that the considerations concerned knowledge about teachers' personal PCK (pPCK) and enacted PCK (ePCK) aspects.