Anne M. Sinatra, Jeanine A. DeFalco. Introduction to Approaches and Challenges in Team Tutoring. In Anne M. Sinatra, Jeanine A. DeFalco, editors, Proceedings of the Approaches and Challenges in Team Tutoring Workshop held in conjunction with the 20th Artificial Intelligence in Education Conference (AIED 2019), Chicago, IL, USA, June 29, 2019. Volume 2501 of CEUR Workshop Proceedings, pages 1-4, CEUR-WS.org, 2019. [doi]