Hi, welcome to the site. Factors are explored on
page 36 of this level 3 handbook and include:
physical environment, activities, specific toys and resources, staff roles and responsibilities, training needs and opportunities, views of the child, involvement of parents carers and families
Lighting, sound, layout and the creation of
small spaces of the setting
Adult led activities and child led activities
This thread that may also be of use -
http://www.silkysteps.com/forum/showthread.php?t=14586
Sample chapter from
Practical Preschool's sustained shared thinking - cached version
EYMP 5 on Talkingpoint.org.uk
Best wishes xx