It was created in 2006 by Paul Edelman, a middle school teacher in New York City. It is now considered one of the top ten The World's Top 10 Most Innovative Companies of 2015 in Education. http://www.fastcompany.com/3041645/most-innovative-companies-2015/the-worlds-top-10-most-innovative-companies-of-2015-in-educat
At this moment, TpT has over 242,866 free products to encourage buyers to experience the activities before purchasing. For example, here is a free activity in my store FREE! Puzzle Match Sample Pack
It includes one page each of some of my puzzle products.
I encourage you to see what TpT has to offer!