Affordance
A term coined by the American Psychologist J.J. Gibson as part of his Theory of Affordance.
Affordances are the 'action possibilities' or the things that could happen within a given envionment.
Parten, Mildred Parten
Mildred Parten (1902-1970), also known as Mildred Parten Newhall, was an American sociologist known for proposing the 'six stages of play' in 1929.
Those six stages being: Unoccupied Play, Solitary (or Independent) Play, Onlooker Play, Parallel (or Adjacent) Play, Associative Play, and Cooperative Play.
Play Episode
A distinct piece of playing with an identifiable beginning, middle and end.
Sand
A natural play material with a long history of facination from children yet only introduced as a deliberate play material around 170 years ago.
Spontaneous Playing
A way of describing playing in which children do not need nor seek out the involvement of an adult to begin, develop, and end their playing.