“…Even when novel open-ended designs are introduced into free play, the tendency is to observe and principally consider rule-based play in subsequent evaluations [15,36]. Research investigating open-ended designs in free play outdoors looks principally at older children, aged seven and up [2,4,15,[23][24][25]36,39,44,48,50,51,58], where we may expect to see children playing games, discussing and negotiating relatively complex rules [37], as a component of their play with open-ended designs. By exception, Pathway [41] was designed for children aged 3-5 years, and the authors report increased physical activity through running, skipping, and jumping on the prototype.…”