Nanette Seago conducts research and designs professional development materials that prepare middle and high school mathematics teachers to more effectively teach challenging mathematical concepts.

Seago serves as Project Director for the Science, Technology, Engineering, & Mathematics program at WestEd. She also serves as Principal Investigator for a National Science Foundation project focused on the research and design of videocase materials for middle school teachers — Learning and Teaching Geometry.

Since 2003, Seago has published two books, two manuals, six peer-reviewed scientific journal articles, and four peer-reviewed chapters in international education research books.

She is primary author of Learning and Teaching Linear Functions, video-based resources designed to better equip teachers to prepare and implement lessons that will help students develop conceptual understanding of linear functions.

Seago collaborated with LessonLab in the development of the TIMSS-R public release videos and the design of an online course sponsored by Intel Corporation entitled: TIMSS Video Studies: Explorations of Algebra Teaching.

In addition, she co-wrote Examining Mathematics Practice through Classroom Artifacts, a book that helps teachers learn how to use classroom artifacts to assess students' thinking and understanding of mathematical content.

She also co-wrote a chapter for the edited volume, Mathematics Teacher Noticing: Seeing Through Teachers' Eyes.

Seago received a bachelor's degree from the University of California, Los Angeles; a teaching credential from California State University, San Bernardino; and a mathematics supplemental authorization from University of California, Riverside.