Interactive Play (image) University of Washington Share Print E-Mail Caption The University of Washington method emphasized playful social interaction and active child participation. Here, UW student Martin Horst plays with the children. Credit I-LABS Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.