Jae Baek 

Jae Baek is a mathematics educator in the Department of Mathematics at Illinois State University, teaching math content and methods courses for pre-service teachers. She also teaches CGI workshops for the CGI Math Teacher Learning Center. Her journey in CGI started as a graduate student under Tom Carpenter at the University of Wisconsin - Madison. Her research focuses on students' understanding of multiplicative problems and strategies and instructional strategies to support their development. 

Graham Fletcher

Graham Fletcher has dedicated his career to education, serving in various roles including classroom teacher, math instructional lead, and currently as a math specialist. With a passion for fostering conceptual understanding in elementary mathematics, he continually explores innovative approaches to support both students and teachers. Graham is a coauthor of Building Fact Fluency and openly shares his wealth of resources on his website, gfletchy.com. 

Rob Schoen

Robert Schoen is an associate professor of mathematics education in the School of Teacher Education at Florida State University. Over the past decade, he has directed several randomized controlled trials designed to study the impact of CGI programs on grades K–5 teachers, teaching, and students. Many of the publications and other products of that work can be found through his personal website: www.schoenresearch.com and at www.teachingisproblemsolving.org 

Lynne Stratton, Associate Professor of Mathematics Education at Louisiana Tech University, teaches content and methods courses for preservice teachers and graduate students.  She also teaches CGI workshops for the CGI Math Teacher Learning Center.  Lynne is especially interested in supporting teachers’ mathematical understanding and believes that focusing on children’s intuitive strategies for problem-solving is the best way to improve teachers’ understanding and practice.