1. Authors photo archive, September 2015.
2. Blatchford, P.,1989, Playtime in the primary school: problems and improvements. Windsor: NFER-Nelson.
3. Branzi, A., Rinaladi, C., Vecchi, V., Petrillo, A., Bruner, J., Icaro, P., A. Sarti, and Veca, A., , 1998, Children, Spaces, Relations: Metaproject for an Environment for Young Children, Ceppi, G., & Zini, M., Modena, Italy: Grafiche Rebecchi Ceccarelli.
4. Bruce, T.,1991, Time to Play in Early Childhood Education. Sevenoaks: Hodder and Stoughton.
5. Dudek M., 2001, Building for Young Children,The National Early Years Network, London, England
6. E.K. Allen and L.R. Marotz, 2000, By the Ages: Behaviour and Development of Children Pre-Birth through Eight, Delmar Thomson Learning, Canada.
7. Erikson, A., 1995, Playground Design: Outdoor Environments for Learning and Development. New York
8. Frost, J.L. and Klein, B.L., 1979, Children's Play and Playgrounds ,Boston: Allyn and Bacon.
9. Heringtone, Susan, 2015, 7C's, Sajadi, Seyedeh Anahita & Mirza Kouchak Khoshnevis, Ahmad, trans.), Azadpeyma Pub., Tehran.
10. Herrington, S. and Lesmeister, C., 2006, "The design of landscapes at child-care centres: seven cs,"Landscape Research, Canada. [
DOI:10.1080/01426390500448575]
11. Hoseini, Afzalossadat, 1999, Creativity Essence and How to Train it, Astan Qods Razavi Pub., Tehran.
12. Johnson, J.E., Christie, J.F. and T.D. Yawkey ,1987, Play and Early Childhood Development ,Glenview, IL: Scott, Foresman
13. L.G. Shaw ,1987, Designing Playgrounds for Able and Disabled Children, in: Weinstein, C.S. & Thomas, G.D (Ed.), Spaces for Children: The Built Environment and Child Development ,New York. [
DOI:10.1007/978-1-4684-5227-3_9] [
PMID]
14. Maufette, A.G., Frechette, L., and Robertson, D.,1999, Revisiting Children Outdoor Environments: A Focus on Design, Play, and Safety ,Hull, Quebec: Gauvin Presses.
15. Moore, R . C. and H. ,1997, Natural Learning: Rediscovering Nature's Way of Teaching , Berkeley California: MIG Communications.,
16. Nicholson, S. ,1971, How not to cheat children: the theory of loose parts, Landscape Architecture.
17. Olds, A. R., 1989, Psychological and Physiological Harmony in Child Care Center Design, Children's Environment Quarterly.
18. Shaw, L.G., 1987, Designing playgrounds for able and disabled children, in: Weinstein, C.S. & Thomas, G.D (Ed.) [
DOI:10.1007/978-1-4684-5227-3_9] [
PMID]
19. Smith, P. K. and Connolly, K .J., 1980, The Ecology of Preschool Behavior , Cambridge, England: Cambridge University Press.
20. This plant information was compiled from R. C. Moore 1992 / J. I. Alber and D. M. Alber,