This Haiku Deck illustrates Spear-Ellinwood's characterization of the ZDD - the Zone of Distal Development, which extends Vygotksy's concept of the zone of proximal development. The ZDD is characterized by the distance between what the learner can achieve now without assistance and the ultimate goal of engagement in a longitudinal learning experience. The ZDD consists of a series of ZPDs through which the learner develops knowledge, skills and practices, attitudes and behaviors, that support achievement of successive proximal objects, bringing the ultimate or distal object of the longitudinal experience into proximal distance in the final zone.