“…These natural environmental resources may include life science and nature (e.g., leaves, rotting logs, insects, animals and sea life, plants, and trees) and Earth science (e.g., rocks and gems, bubbles, water, and the ocean) [74]. Studies of preschool-and school-children exploring in a natural outdoor environment show that children's findings of natural elements and objects (e.g., insects, plants, rocks, or puddles) seem to interest and engage the children [75,76]. The natural outdoor environment is here defined as an area outside the kindergarten or school's area that is largely unaffected by human intervention, like, for example, a forest, river, or seashore area.…”