Play-Based Learning Resources

Diane Kashin has put together resources focussed on play. With the article there are a variety of resources you can access, including videos.
This is Peter Gray’s definition of play from the article:
Self-chosen and self-directed.
An activity in which means are more valued than ends.
Having a structure, or rules, which are not dictated by physical necessity but emanate from the minds of the players.
Imaginative, non-literal, mentally removed in some way from “real” or “serious” life.
Involving an active, alert, but non-stressed frame of mind.