The purpose of this study was to examine the involvement of early childhood pre-service students (PSSs) in children's constructive play and highlight how this involvement supported children's play skills towards advanced play behaviours as seen by previous literature. Drawing from the conceptual framework of the Zone of Proximal Development, as proposed by Vygotsky, and supporting adult involvement in children's learning, we specifically examine PSSs involvement in constructive play. Participants were four out of 26 PSSs participating in their school experience program phase III and 17 children of the ages 5-6 years. Data was collected through videos, 12 in total, of approximately 20 minutes each, during which the PSSs interacted with children while participating in constructive play. Also, data was collected through reflective journals reported after each video. Data analysis highlighted the different ways the PSSs employed to get involved in children's play, these being either using direct or indirect involvement. This study suggests that early childhood teachers' reflection can create a Zone of Proximal Action which refers to good fit direct and indirect involvement supporting children's mature constructive play behaviours.