This chapter's general perspective is to explore complex thinking in teaching elements of cultural dynamics (with an emphasis on the play), aspects of body dynamics (with an emphasis on motor behaviour), and movement dynamics (with an emphasis on fundamental motor skills). The research context is the institutional program of pedagogical residency for physical education teacher education (PETE) at one Brazilian university. The objective is to present evidence of complexity in teaching games for understanding (TGfU) notions of motor behaviour in the context of PETE. The specificities of PETE point to recurrent problems for researchers from different areas, such as games and the process of motor development throughout childhood. The research that underlies this chapter is qualitatively oriented. From the thematic analysis, the themes relevant to TGfU were identified in the codes of cultural elements, themes of motor behaviour in (inter)personal aspects, and themes of motor skills in the dynamics of movement.