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. 2022 Jun 15;19:66. doi: 10.1186/s12966-022-01294-0

Table 2.

Terminology and taxonomy of the Play, Learn, and Teach Outdoors—Network (PLaTO-Net)

Root termsa PlaTO-terms Sub-terms Proposed definition Synonym/co-hyponym
Outdoors Any open-air, wild, natural, or human-made space
Nuances: The space may include a temporary or fixed cover (e.g., awning or roof) but maintain exposure to ambient environmental conditions
Built environment Human-constructed physical surroundings (e.g., structures, features, facilities) in which people live, learn, work, travel, and play
Green space Any vegetated land, an area of grass or trees that may also contain bodies of water (e.g., pond, creek), in an urban environment
Nuances: The space may either set apart for recreational or aesthetic purposes or wasteland areas that have been colonized by nature in an otherwise urban environment
Loose parts Natural or manufactured materials with no specific set of directions that can be used alone or combined with other materials, moved, carried, combined, redesigned, lined up, and taken apart and put back together in multiple ways and used for play
Playground A piece of land usually equipped with facilities and/or equipment that is used for outdoor play and recreation
School ground Proprietary outdoor area on the land of educational institution buildings Synonym: School yard
Natural environment Non-built surroundings and conditions in nature in which living and non-living things co-exist Synonym: Nature
Garden Planted, developed, or cultivated land used to grow vegetables, fruit, herbs, flowers, and other living plants and organisms
Outdoor play space Any outdoor area where people can play
Play Voluntary engagement in activity that is fun and/or rewarding and usually driven by intrinsic motivation
Nuances: Not all play is self-directed and intrinsically motivated
Outdoor play A form of playa that takes place outdoorsa Co-hyponym: Outdoor recreation
Active play A form of playa that involves physical activity of any intensity
Free play A form of playa that is unstructured and self-directed Synonym: Unstructured play
Nature play A form of playa that takes place in a natural environment and/or involves interaction with natural elements and features (e.g., water, mud, rocks, hills, forests, and natural loose parts, such as sticks, pinecones, leaves, and grass) Co-hyponym: Nature-based recreation
Risky play A form of playa that is thrilling and exciting, which involves uncertainty, unpredictability, and varying degrees of risk-taking
Social play A form of play that involves interacting with others
Learning The development of knowledge, skills, values, morals, beliefs, and habits
Outdoor learning Learninga that takes place outdoorsa
Teaching The process of facilitation of learning
Outdoor teaching Teachinga that takes place outdoorsa
Education The process of learninga and teachinga
Outdoor education Educationa that takes place outdoorsa
Environmental education A form of educationa aimed at increasing knowledge, awareness, and appreciation of the environment
Forest schools An educationala approach that includes regular and repeated access to natural space and participant-directed, emergent, and place-based learning Co-hyponym: Forest kindergartens, forest preschools, forest programs
Outdoor classroom A shared space of learninga and teachinga in the school context that is entirely outdoors
Nuances: Unlike outdoor education, an outdoor classroom takes regular pedagogy and curriculum outdoors in the school context
Place-based learning Learninga that considers the importance of connecting learners with their community by anchoring pedagogy within the context of the locally natural, cultural, and social ecosystems Co-hyponym: Place-based education
Nuances: The learning focuses on a specific physical space which may or may not involve the natural environment
Land-based education An approach to educationa that recognizes a deep connection and relationship of reciprocity between people and the land Co-hyponym: Land-based learning
Nuances: This is specific to the North American context based on Indigenous epistemology of which the land is being understood beyond the physical sense and as with spiritual, emotional, and intellectual sense
Nature-based education A form of teachinga and learninga situated in the context of outdoor natural settings Co-hyponym: Nature-based learning, nature-based preschool
Learning for sustainability A cross-curricular approach to life and learninga which enables learners, educators, schools, and their wider communities to build a socially just, ecologically sustainable, and equitable society
Other terms related to PLaTO
Outdoor activity Leisure, recreational, educational, occupational, and/or health-enhancing activity engaged in the outdoors
Outdoor time Time spent outdoors

aRefer to the definition of corresponding root term