6Ignico,A. Early childhood physical education: Providing the foundation[J].The Journal of Phys- ical Education, Recreation & Dance,1994,65(6):28-30.
7Wardle, F. Outdoor play: Designing, building, and remodeling playgrounds for young children[J]. Early Childhood News,1997,(9):36-42.
8Bullard,J. Creating Environments for Learning: Birth to Age Eight[M].New Jersey:Upper Saddle River,2012.
9Frost,J.L.,Brown,P.,Sutterby,J.A.,Thornton,C.D. The developmental benefits of playground[M]. Olney, MD: Association for Childhood Education International,2004.
10Shala, M. Assessing gross motor skills of Kosovar preschool children[J].Child Development and Care, 2009,179(7): 969-976.