Participant inclusion and exclusion criteria is divided into three distinct sets of levels- 1) organization level, 2) adult individual participation, and 3) child participation.  The YMCAGV ELCC site inclusion criteria:  We will select ELCCs to include in the study in consideration of different variables - geographic area and demographics of neighbourhood served, physical characteristics of the ELCC outdoor space (e.g., size, at grade or not), readiness of program (as assessed by YMCA senior staff), and time spent participating in outdoor play. These variables will be further explored with the YMCAGV to determine priority site inclusion criteria and finalize site selection.  Adult participation inclusion criteria:  -Being early childhood educators (ECEs) or staff (e.g., administrators, directors and supervisors) at the participating YMCAGV ELCCs.  Child participation inclusion criteria:  Being between the ages of 3 to 5 years; Currently enrolled in one of the participating YMCAGV ELCCs; Obtained parental consent for their participation in the study.