Abstract
The purpose of this study is to analyze the micro-genesis of a child’s appropriation of timing. The data consist of video observations from a primary classroom with a focus on one child (7 years old) participating in a musical activity. The results show that the teacher scaffolds the child in several steps: from establishing a platform for participation in the activity, via demonstration to explanation. The child goes from being uncoordinated with the teacher to being able to play in time with her. The meta-issue of how to represent developmental processes in research is discussed.