Dr. Jo Boaler is a professor of mathematics education at Stanford University. The author of seven books and numerous research articles, she serves as an advisor to several Silicon Valley companies and is a White House presenter on girls and STEM (Science, Technology, Engineering, and Math). She is a regular contributor to news and radio in the United States and England and recently formed youcubed.org to give teachers and parents the resources and ideas they need to inspire and excite students about mathematics. Her previous book with Wiley, Mathematical Mindsets (ISBN: 9780470894521, 10/15), has sold over 130,000 copies. Cathy Williams is the co-founder and the executive director of youcubed. Cathy's former roles have included a high school mathematics teacher, AVID coordinator, math department chair and district curriculum leader over an 18-year span, before she became a curriculum and instruction administrator in 2003. Cathy served for seven years as the San Diego County Office of Education K-12 Mathematics Coordinator where her key projects included developing the book and professional development program. Jen Munson is an independent consultant and Stanford doctoral student. She provides professional development to teachers and school leaders in public, charter, and independent schools across the country.