**June Mark **brings over twenty years of experience in research and development related to mathematics instructional materials, curriculum implementation, and mathematics teacher professional development. June received her BS (Mathematics) and BSE from the University of Pennsylvania and her Ed.M. from the Harvard Graduate School of Education. She has been involved in a numerous mathematics education projects, many centering on bringing high quality mathematics to underserved populations. Outside of work, she enjoys spending time with her family including her kids, Michael and Lena.** **

June Mark** **is the coauthor of four Heinemann titles: *Lesson Study in Practice: A Mathematics Staff Development Course* (2010), *A Mathematics Leaders Guide to Lesson Study in Practice* (2010), *The Fostering Geometric Thinking Toolkit* (2008), *Choosing a Standards-Based Mathematics Curriculum *(2000) and *Transition to Algebra: Make Algebra Make Sense *(2014).