Let the Kids Learn Through Play
http://www.nytimes.com/2015/05/17/opinion/sunday/let-the-kids-learn-through-play.html?_r=0
Preschool Choices: Play is the Way
https://www.parentmap.com/article/preschool-choices-play-is-the-way
Why Play Is Important in Preschool Classrooms
http://www.parents.com/toddlers-preschoolers/starting-preschool/choosing/preschool-play/