The aim of this study is to contribute to the understanding of the transdisciplinary exploration of children in constructing the choreography of the “Dance of the Dinosaurs”, with mathematics being one of the disciplines used. Central questions explored were: 1. What form did the children’s transdisciplinary exploration take? 2. What could be learned about the mathematical understanding of the children? and 3. What problems emerged during the process and how did the children respond to these? The study is an example of dialogical research, providing a bridge between post-modern and modern theories and approaches. Deconstructive dialogue, imagination, and rhizomatic thinking are central concepts in the theoretical framework. The empirical material consists of six-hour video-taped material. The study found that the children explored and identified new problems, which they then critically reflected and called in question. Time, space, shape, size, numbers, and patterns emerged in their mathematical work. The children cooperated with each other during the problem-solving process and looked for further challenges.