Dr. Mark Ellis is a Professor in the College of Education at California State University, Fullerton where he directs the Mathematics and Science Teacher Initiative and leads several grant-funded projects involving innovative approaches to teacher preparation and teacher development. He served on the National Council of Teachers of Mathematics (NCTM) Board of Directors from 2011-2014 and contributed to the development of NCTM’s Principles to Action: Ensuring Mathematical Success for All. In 2015 he received NCTM’s Linking Research to Practice award as co-author of the article, “Multidimensional Mathematics Teaching.” He is co-author of Reimagining the Mathematics Classroom: Creating and Sustaining Productive Learning Environments, K-6 and serves as one of two lead authors for Ready Mathematics, a K-8 curriculum series used in schools throughout the U.S. Prior to entering higher education, Mark taught mathematics in grades 6-12 in northern California public schools for six years, earning National Board certification in early adolescence mathematics in 1999. All of his work is driven by a belief that every student has the potential to be successful in learning mathematics and a commitment to ensuring this potential is fulfilled in every classroom. Mark Ellis' appearance is sponsored by Curriculum Associates.