2024 No Comparing Classroom Context and Physical Activity in Nature and Traditional Kindergartens https://www.jstor.org/stable/10.7721/chilyoutenvi.27.3.0056 Meyer, Joshua North America Observational Students Elementary (K-5) Green space Other forest schools nature-based learning informal learning Physical activity classroom structure early childhood education Naturalistic observation compared 81 students in nature and traditional kindergartens in Western Canada. Nature settings promoted more moderate-to-vigorous activity and unstructured movement. Findings support green environments for early childhood health. 2017