The study provides an insight into how teachers may facilitate students' group learning in science with digital technology, which was examined when Norwegian lower secondary school students engaged in learning concepts of mitosis and meiosis. Quantitative and qualitative analyses of the teacher's assistance draw on Galperin's conceptualisation of learning. Findings reveal patterns in the teacher's guidance: the teacher fulfilled the "orienting," "executive" and "controlling functions" while assisting students in identifying the key features of mitosis and meiosis and solving the compare and contrast task. The teacher relied on and interplayed with the available mediational resources: compare and contrast task, digital animations, and collaborating peers. However, it was the compare and contrast task that demonstrated an approach to study scientific concepts which may have contributed to the development of learners' understanding about to engage in learning in science. By adopting such an approach, learning activity has the potential to not only help students to achieve learning outcomes but it acquires a functional significance, becoming "a tool" in the learning process aimed at the development of students' as learners. The digital animations, in turn, demonstrated scientific processes that were otherwise invisible for students and triggered group discussions. The study, therefore, raises questions about the need for practitioners' awareness of the type of support the technology and other resources provide to assist both conceptual learning and enhancing students' agency in learning to learn.