* "All the evidence shows that children learn better when they've had the opportunity to play outside," says kindergarten director Doug Fargher.
* It's based on the philosophy that children taking risks at the right age and in the right environment will endow them with experience that ultimately keeps them safe.
* Research commissioned by Planet Ark found that there has been a dramatic shift in childhood activity from outdoor to indoor play in one generation. While about 70 per cent of adults played outdoors more than indoors when they were young, this compared to only 13 per cent of their children.
* We are at risk of losing something precious: the unobserved child, Tranter says. The child who walks to school with friends and unearths treasures on the way. The child who plays with gleeful abandon, unmonitored by their parents.
* "We need to come to the realisation that we are overprotecting our kids. It might seem like a good idea at the time but unless you get them to take some risks, they're never going to learn. When they play, they learn a hell of a lot," he says.
* "Parents' fears are completely out of touch with reality. The American stats show that if you left your children on the side of the road, you would have to wait 750,000 years before they were kidnapped by a stranger."