"For all members of the Leave No Child Inside movement who are engaged with early childhood—as educators, child care providers, nature center staff, parents, landscape designers, or pediatricians—this book is an essential resource." Louise Chawla, Children and Nature Network, USA
Skimmed read this book. The book was published in 2007 so you can say it's quite out of date as an education book although I would say this book is important in today's world than it was 20 years ago.
The focus on non guided play and non structure play was really interesting and perhaps maybe it's not the play spaces that are the issue but it's how adults direct play.
The forest school/outdoor nursery chapter is out of date but it is good to read about the back ground of it and why they came about in the curriculum
A short, empowering and inspiring book, Playing Outdoors asks what has happened to our understandings of both children and the environment in the last 100 years. Probing the notion of risk and freedom, Helen Tovey has created a powerful book that introduces the theories of outdoor play, but also provides warnings if this model of thinking and movement is discarded through the imperatives for safety and risk management.