This paper discusses a year-long technology integration project during which teachers and researchers joined forces to explore children's collaborative activities through the use of touch screens. In the research project discussed in this paper, 16 touch screens were integrated into teaching and learning activities in two separate classrooms; the learning and collaborative processes were captured by using a video, collecting over 150 hours of footage. By using digital research technologies and a longitudinal design, the authors of the research project studied how teachers and children gradually integrated touch screens into their teaching and learning. This paper examines the methodological usefulness of video-based multimodal analysis. Through reflection on the research project, we discuss how, by using video-based multimodal analysis, researchers and teachers can study children's touch-screen supported collaboration and how researchers and teachers can learn together.