1. Almasi, A. M. (2003). Comparative education. Tehran: Rosd Press. (Persian).
2. Clark, J., Clements, R., Guddemi, M., Morgan, D., Pica, R., Pivarnik, J., et al. (2009). Active start: A statement of physical activity guidelines for children from birth to age 5 (2nd ed.). Sewickley, PA: National Association for Sport and Physical Education.
4. Flavell, J. H. (1988). Cognitive development. New Jersey: NJ, Prentice-Hall.
5. Government of Newfoundland and Labrador, a Curriculum Guide (2010). Physical education, kindergarten. Available at: http://www.ed.gov.nl.ca/pdf/ pdf [Accessed 23 January 2014].
6. Kindergarten in California Public Schools. (2011). Available at: http://www.cde.ca.gov/ci/cr/cf/allfwks.asp [Accessed 1 August 2015].
7. Lever, J. (1987). Sex differences in the complexity of children’s play and games. American Sociological Review, 43, 471-483.
8. Janz, K., Letuchy, E. M., Eichenberger Gilmore, J. M., Burns, T. L., Torner, J. C., Willing, M. C., …, & Levy, S. M. (2010). Early physical activity provides sustained bone health benefits later in childhood. Medicine and Science in Sports and Exercise, 42, 1072–1078.
9. Mofidi, F. (2008). Pre-school education program. Tehran: The School. (Persian).
10. Personal Development, Health and Physical Education K-6. Board of studies New South Wales. (2014). Available at: http://
www.boardofstudies.nsw.edu.au [Accessed 28 July 2015].
11. Safi, A. (2000). Education, elementary, middle and high school, Tehran: Samt Press. (Persian).
12. Talebzadeh Nobarian, M. (2006). Children preschool education program. Tehran: Jahad of Daneshgahi. (Persian).
14. The National Curriculum in England, Framework Document: For Teaching. (2015). Available at: http://www.gov.uk/dfe/nationalcurriculum [Accessed 31 October 2015].
15. The National Curriculum Islamic Republic of Iran (2010). Secretariat of the national curriculum. Availabel at: http://www.medu.ir [Accessed 23 January 2014]. (Persian).
16. The Research and Educational Planning Organization. (2013). Program guide and pre-school activities, school education. The Department of Education Office of Planning and Writing Textbooks. (Persian).