Dr. Beatrice Vance, a developmental psychologist, is designing a new outdoor 'perceptual-motor garden' at the Horizon Early Years Centre for children aged 2 to 6 years. Dr. Vance wants to ensure the garden features structured activities that directly stimulate and develop the children's depth perception and shape/size constancy.
Outline at least one structured outdoor play activity Dr. Vance could implement in the garden, and explain how this activity supports the development of these specific perceptual abilities in children across this age range.