Outdoor education usually refers to organized learning that takes place in the outdoors. Outdoor education programs sometimes involve residential or journey wilderness-based experiences in which students participate in a variety of adventurous challenges and outdoor activities such as hiking, climbing, canoeing, ropes courses and group games. Outdoor education draws upon the philosophy, theory, and practices of experiential education and environmental education. Outdoor education usually refers to organized learning that takes place in the outdoors. Outdoor education programs sometimes involve residential or journey wilderness-based experiences in which students participate in a variety of adventurous challenges and outdoor activities such as hiking, climbing, canoeing, ropes courses and group games. Outdoor education draws upon the philosophy, theory, and practices of experiential education and environmental education. Outdoor education can be simply defined as experiential learning in, for, or about the outdoors. The term 'outdoor education', however, is used broadly to refer to a range of organized activities that take place in a variety of ways in predominantly outdoor environments. Common definitions of outdoor education are difficult to achieve because interpretations vary according to culture, philosophy, and local conditions. Outdoor education is often referred to as synonymous with outdoor learning, outdoor school, forest schools and wilderness education. Outdoor education often uses or draws upon related elements and/or informs related areas. The hallmark of outdoor education is its focus on the 'outdoor' side of this education; whereas adventure education would focus on the adventure side and environmental education would focus on environmental. Expeditionary education involves expeditions into wilderness 'where man is but a visitor.' All of these activities typically involve experiential education. 'Education outside the classroom' describes school curriculum learning, other than with a class of students sitting in a room with a teacher and books. It encompasses biology field trips and searching for insects in the school garden, as well as indoor activities like observing stock control in a local shop, or visiting a museum. It is a concept currently enjoying a revival because of the recognition of benefits from the more active style. The Education and Skills Committee of the House of Commons of the United Kingdom has reported that it brings history and art to life, develops social skills, and clearly enhances geography and science., while DfES has prepared practical guidelines for outdoor activities. Despite the evidence supporting an extension of outdoor learning for children, there are a number of obstacles in the way. One of these obstacles is risk aversion amongst teachers, parents and others, raising reluctance to such diverse and physical tasks. The journalist Tim Gill has written about parental and institutional risk aversion affecting many activities with children in his book 'No Fear'. Another obstacle is the perceived high cost of facilitating outdoor learning. Creating an outdoor learning environment needn't cost a great deal, however. The UK Early Years Framework Stage, which outlines best practice in Early Years teaching, asserts that: 'Outdoor learning is more effective when adults focus on what children need to be able to do rather than what children need to have. An approach that considers experiences rather than equipment places children at the centre of learning and ensures that individual children's learning and developmental needs are taken account of and met effectively' Linda Tallent, a UK-based educational consultant who has worked extensively with schools to develop their outdoor spaces into learning environments, agrees. She believes that by focussing on activities and skill development, it is possible to develop an outdoor learning curriculum on a 'shoe string'. She cites a comment by Will Nixon, who reminds readers that 'Using the real world is the way learning has happened for 99.9% of human existence. Only in the last hundred years have we put it into a little box called a classroom.'. Tallent also refers to evidence from a number of studies that the most effective way of learning is through participation, and calls on educators to make a special effort to create opportunities for children to participate in their learning.