Authors & Presenters

Jen Hollis Smith has over a decade of teaching experience in the Wisconsin Public School system. She is currently a math instructional coach and math interventionist in the Hortonville Area School District.

Tracey A. Hulen is an elementary and middle school mathematics and SEL specialist who has experience leading two professional learning communities in Fairfax County, Virginia, to Model PLC status.

Darshan M. Jain is the director of mathematics and computer science at Adlai E. Stevenson High School in Illinois. Previously, he served as an award-winning mathematics teacher as well as as a curriculum team leader.

Jessica Kanold-McIntyre is an educational consultant and author committed to supporting teacher implementation of rigorous mathematics curriculum and assessment practices, blended with research-informed instructional practices.

Dr. Nathan D. Lang-Raad is an educator, international speaker, and author. He has served as a teacher, principal, professor, director of curriculum and instruction, chief education officer, and vice president, and he has worked full-time at NASA. As of 2022, he has written and cowritten seven books.

Dusti Larsen, MEd, currently serves as the alternative learning environment teacher focusing on behavior plans and social-emotional skills at Gravette Upper Elementary in northwest Arkansas. She is also the coordinator of math interventions.

Donna Simpson Leak, PhD, is superintendent of Community Consolidated Schools District 168 in Illinois. She has trained thousands of teachers and presented at more than 200 conferences worldwide.

Erin Lehmann, EdD, currently serves as an assistant professor for the University of South Dakota. She is an author, leader, and facilitator, advocating for mathematics and high levels of learning for all.

Ashley Mistretta is a K–8 mathematics specialist and is currently working as an instructional coach at Rose Hill Elementary School, part of Fairfax County Public Schools.

Brittany Mozingo has more than a decade of experience as an educator in at-risk schools. She is currently the instructional coach at Fern Creek High School, a DuFour Award–winning school in Louisville, Kentucky.