Authors & Presenters

David A. Sousa, EdD, is an author and international consultant. He has received numerous awards from professional associations, school districts, and educational foundations for his commitment to research, staff development, and science education.

John Spencer is an assistant professor of educational technology at George Fox University. Previously, he spent twelve years as a middle school teacher at the Cartwright Elementary School District in Phoenix, Arizona.

Susan Olsen Stevens is an educator with experience that spans private, public, and international schools. Her mission is to inspire joy in reading and writing as a way to communicate important ideas.

Rebecca L. Stinson has over 20 years in education. Her roles include teacher, educational planner, and principal in the Chicago Public School System, where she has worked for the past several years.

Rebecca Stobaugh, PhD, is a professor at Western Kentucky University. She teaches assessment and unit-planning courses, supervises first-year teachers, and consults with school districts on critical thinking, instructional strategies, assessment, technology integration, and other topics.

Patrick L. Sullivan, PhD, is an associate professor of mathematics at Missouri State University. He is a former principal, mathematics teacher, and a mathematics department head.

Makini Sutherland, EdD, is a mathematics educator with experience at the elementary, high school, and collegiate level. She has also facilitated training elementary teachers for the United States Agency for International Development (USAID) Jamaica mathematics project.

Rachel Swearengin teaches fifth grade in Olathe Public Schools and serves as a field educator for the Kansas State Department of Education, leading professional development and contributing to assessment and planning committees.

Marie Swift has been a K–3 classroom teacher for the majority of her career. She was also a K–12 technology resource teacher and a literacy resource teacher for K–8 in the Simcoe County District in Ontario, Canada.

Janet Lynne Tassell, PhD, is an associate professor at Western Kentucky University, where she teaches elementary math methods and directs the Elementary Mathematics Specialist Endorsement program.