Meet the IM Facilitators


Becca Phillips, has, in the last 25 years, taught everything from grade 6 math to College Algebra. Most recently she has taught middle school and high school with Huntsville City Schools. Becca received her BA in Mathematics Education from the University of North Carolina at Chapel Hill and her M.Ed (Curriculum and Instruction) and M.S. (Mathematics) from East Tennessee State University. Becca was named a 2017 state-level finalist for the Presidential Award for Excellence in Mathematics and Science Teaching and 2018 Huntsville City Schools Secondary Teacher of the Year. She is excited to be working with Illustrative Mathematics to help schools and districts that are working to support students by supporting teachers, to provide equity, and to encourage everyone to enjoy math.

Jeanne Simpson, a National Board Certified Teacher, has been an educator for more than 25 years. She taught middle school and high school math in Georgia and Alabama before becoming a math specialist for the Alabama Math, Science, and Technology Initiative. She holds graduate degrees in integrating classroom technology and in differentiating instruction for English speakers of other languages. She tweets @jsgeometry.


Mary Knuck has worked in the field of education for over 25 years as a teacher, an educational consultant for Houghton Mifflin Co., the Deputy Associate Superintendent for Standards at the Arizona Department of Education, and now as a consultant in mathematics. She has extensive experience creating and delivering professional development in mathematics and served as the representative for Arizona on the Common Core State Standards Work Team and the Operational Working Group for PARCC. Mary has collaborated closely with both teachers coaches, and administrators within Arizona and nationally. Her work supports building conceptual understanding, best teaching practices, equity and access, response to intervention, and assessment for learning. She has been very involved with the Intel Math Program as a senior trainer and the mathematics educator part of the instructional team. Mary achieved National Board Certification as a Middle Childhood Generalist, received the Presidential Award for Excellence in Mathematics and Science Teaching, and earned her doctorate in Curriculum and Instruction with an emphasis in mathematics education from Arizona State University.


Chase Orton has worked in math education for almost 20 years, but strives to keep a growth mindset and remember that there is always value in thinking more deeply about simple ideas. He is currently self-employed working with teachers around the country as a coach, collaborator, and consultant. He is a lead author of MathLinks, a comprehensive math curriculum for students in grades 6–8. He was in the math classroom full time for 12 years working in a variety of educational models. In addition to teaching most of the content in grades 6–12, he has leveraged his experiences as an outdoor educator to create and teach classes like “The Math and Physics of Mountain Biking” and the “Shape of Sound.” He writes about his work at, and you can find him on Twitter @mathgeek76. When he’s not geeking out about math, Chase loves to find joy and peace in the mountains.

Christine Newell is an elementary math specialist with the Stanislaus County Office of Education in Modesto, California and a math instructor of pre-service teachers at California State University, Stanislaus. She has been working in the field of education in central California for the past 10 years, teaching grades 5 and 6 and working closely with K–8 teachers to support them in their mathematics learning and instruction. She is a speaker both regionally and at NCSM and NCTM on best practices and important issues in elementary math education and has been featured in Education Week, one of the leading publications in K–12 education. Chrissy lives with her husband and three little mathematicians in Turlock, CA. Follow her on Twitter @MrsNewell22 and on her blog

Gretchen Muller has over 30 years of experience working in mathematics education as a middle school teacher, coach, curriculum and instruction specialist and project manager. Currently, she is the Executive Secretary for the California Mathematics Council and a coaching coordinator for a statewide grant. Gretchen’s most recent projects have involved issues of equity and access through the use of discourse and task design. She has worked with kindergarten through algebra teachers to improve their instruction and has extensive experience with performance assessments and their use as formative assessment tools. She has been involved with the Silicon Valley Mathematics Initiative and their use of the MARS tasks. Gretchen has a BA in Geology from UC Berkeley, masters in education administration from San Francisco State University, and is worked on her EdD in Learning and Instruction from the University of San Francisco.

Craig Schneider is a mathematics educator who has taught high school mathematics in California and Colorado. He has a PhD in Instruction and Curriculum, and has designed, facilitated, and researched professional learning experiences for K–12 teachers through various university projects, NSF-funded grants, and K–12 district initiatives. Through his work at the Center of Mathematics Education of Latinos/as, Craig’s appreciation of the importance of focusing on students’ mathematical language development grew. He also experienced the value of interdisciplinary connections of STEM as he helped develop and teach in a new secondary math/science teacher education program called CU Teach. Currently, Craig works as a district-level mathematics specialist supporting K–12 educators through professional learning communities. Outside of his professional work, Craig spends quality time with his family gardening, playing guitar, and going to the beach. He tweets @craig_schneider.

Vanessa Cerrahoglu started her journey as an educator, curriculum developer, and workshop facilitator over 20 years ago. She taught high school mathematics in Los Angeles and Orange County before joining her local county office as a math coordinator. She has developed a unique perspective to the problems we face every day, through her work with diverse learning communities: a site with predominantly English language learners in Title 1 schools, a math and science academy, and an academy grounded in the arts. She currently supports teachers, administrators, and varied stakeholders, grades K–12, to foster a love for learning mathematics! She tweets @mymathsoul.


Lisa Bejarano is a National Board Certified 14-year teaching veteran. Lisa is a instructional designer with Desmos and has worked as a curriculum writer with Illustrative Mathematics. She develops and facilitates mathematics professional learning at district, state, and national levels and presents annually at NCTM conferences. Lisa enjoys supporting teachers to encourage and facilitate mathematical discourse and collaboration among their students. Lisa has a Masters degree in curriculum and instruction from the University of Colorado and is the 2015 Presidential Awardee for Excellence in Mathematics and Science Teaching. Lisa blogs about mathematics education and can be found on twitter at @lisa_bej.


Kevin Liner is currently the K-8 Professional Learning Content Lead for Illustrative Mathematics and Ph. D. student at the University of Connecticut with a focus in Curriculum and Instruction in Secondary Mathematics. He also is the Connecticut Team Leader of the Student Achievement Partners Core Advocate Network. Kevin began his career as a high school math teacher and Secondary Mathematics Curriculum Specialist in Hartford, Connecticut. Kevin’s passion for teaching and learning has also taken him as far as Rwanda, where he works with the Rwanda Teacher Education Program to help design and implement a national teacher training program. In all he does, Kevin is guided by a personal passion for mathematics and a boundless desire to help students and teachers succeed. He tweets @kevliner.


Kristin Gray a National Board Certified 21-year veteran teacher of grades 5, 7, and 8, is currently the Elementary Curriculum lead at Illustrative Mathematics and writer of IM professional learning content. She has served as a curriculum writer on the IM 6–8 Math curriculum and Teaching Channel Laureate. Kristin has developed and facilitated mathematics professional learning at district, state, and national levels and presents annually at both the NCSM and NCTM conference. As a teacher, colleague, presenter, and learner, Kristin continuously shares the value of curiosity around student thinking in her planning and instruction. To reflect on her experiences, she blogs and connects with educators on Twitter, @MathMinds. Kristin has a B.S. in elementary education with a concentration in mathematics from the University of Delaware, a M.Ed. in applied technology in education from Wilmington University and is the 2014 Presidential Awardee for Excellence in Mathematics and Science Teaching.

District of Columbia

Lauren Lamb is a grade 7 and 8 math teacher at Saint Patrick’s Episcopal Day School in DC. Before joining St Patrick’s, she was a grade 6 math teacher at Sidwell Friends School for 12 years. Lauren worked for the Algebra Project in Cambridge, MA throughout high school and college; her time as a math literacy worker and Co-Director of the Math Institute influences her work to this day. Lauren graduated from the Master of Arts in Mathematics Teaching and Leadership at Mount Holyoke in 2016. She returns in the summers as a visiting professor to teach the DMI courses. Lauren also holds a M.Ed. from Lesley University through a joint partnership with Shady Hill School’s Teacher Training Course and a B.A. from Emory University. When Lauren is not teaching and learning, she enjoys hot yoga, books on tape, and spending time with her husband and their two sons.


Lisa Englard a STEM educator with a B.S. in Engineering and an M.S. in Education, believes in joyful math as the foundation for all STEM learning and innovation. Lisa began her career in the field of actuarial science, moving on to software development, database management, and eventually teaching, professional development facilitation, and curriculum development. Lisa published several articles in the NCTM journal Teaching Children Mathematics and served a 3-year term on its Editorial Panel. As a content specialist for Khan Academy, Lisa provided the Common Core expertise for the development of standards-aligned K–8 math exercises. But the highlight (so far!) of a long and varied career was serving as an author on the Illustrative Mathematics writing team for the 6–8 curriculum. Lisa currently creates joyful math classrooms with the Illustrative Mathematics curriculum, as well as teaching computer science, physics, and engineering to middle and high school students and summer courses for Girls Who Code.


Alanna Mertens, a National Board Certified Teacher has been sharing her love for math all of her life. After 20 years teaching in grades 2–8 in Chicago Public Schools, she left the classroom to support the teachers as they grappled with the increased rigor and push for conceptual understanding required by the Common Core State Standards. In her current role at the STEM Center at DePaul University, she works with the Chicago Public Schools Department of Math to support high quality math education for all students by providing collaborative professional learning opportunities for teachers and administrators. She is excited to be given the chance to work with teachers as they think deeply about ways to provide truly powerful math instruction. She believes that everyone can be a “Math Person” and works to support teachers and students as they develop positive math identities. She tweets @alannamertens.

Anita Brown is a doctoral candidate in Curriculum and Instruction of Mathematics Education at the University of Illinois Chicago and a middle school mathematics district curriculum coach. She has worked with students and mathematics education for the past 18 years, focusing on middle and high school mathematics and on the academic achievement and positive self-efficacy of urban students in mathematics. She distinguished herself as a professional development leader in the effective use of curricula such as AgileMind and Eureka Mathematics.

Annie Forest has been an educator for 15 years, with 12 years of classroom teaching experience, 2 years of instructional coaching, and now serving as a district math coordinator. She is a National Board Certified Teacher and on the board of directors for the Illinois Council of Teachers of Mathematics. Annie is passionate about giving all students an equitable education, making student thinking visible, and teacher collaboration and reflection. She is also interested in incorporating purposeful technology in the math classroom and is a Desmos Fellow. She blogs at and tweets @mrsforest.


Angie Shindelar has been sharing her love of learning and teaching math for 30 years. After teaching grade 3 and grade 7–8 math for 20 years, she left the classroom to begin supporting teachers in their journey to improve math learning for students. She has a BA in Elementary Education and a MA in Middle Grades Mathematics Teaching. She was a 2001 Presidential Awardee for Excellence in Mathematics and Science Teaching. She is a board member for the Iowa CTM and a member of NCSM and NCTM. She currently works as a math consultant with K–8 teachers. She is passionate about supporting teachers in deepening their understanding of math and bringing excitement into their instruction to reach students. When not spreading her passion for math, she and her husband enjoy traveling and attending concerts of their favorite bands.


Greta Anderson has been teaching middle school mathematics in New Orleans, Louisiana since 2005 and has a Master's of Education in Instructional Leadership in Mathematics. She spent the majority of her time with FirstLine Schools where she spent her final three years serving as the Director of Mathematics. Greta has also been working on the Illustrative Mathematics team since 2012 and is an alumna of Park City Mathematics Institute. She now works as a math consultant. She embraces a growth mindset for her own professional learning and loves helping spread a growth mindset-based approach to mathematics with teachers and students.


Sarah Caban has been a teacher for sixteen years. She spent the first six of those years living on an island off the coast of Maine and teaching in a K–8 one room schoolhouse. Then, Sarah taught grade 4 for four years. She has been in her current position as K–12 district math coach/coordinator for seven years. Sarah graduated with a B.A. in English from Hofstra University and an M.Ed. from Antioch New England Graduate School. She has a certificate of Math Leadership from University of Maine, Farmington. She blogs at and her twitter handle is @csarahj.


Jenna Laib is currently a math specialist at the Driscoll School (K–8) in Brookline, MA. Students inspire her. She also enjoys working with pre-service and in-service teachers to develop content knowledge, pedagogical strategies, and infinite curiosity for mathematical thinking and learning. She blogs as a way to process her experiences in the classroom. Jenna is the 2016 recipient of the Harry S. Levitan Prize for Educational Leadership from Brandeis University. Twitter: @jennalaib


Danielle Seabold has served, for over 20 years, in mathematics education at the local, state, and national levels. She is dedicated to supporting educators in ensuring equitable systems and practices to provide high-quality mathematics education for all students. She started her career in mathematics education as a high school Math and Physics teacher in Kalamazoo, MI. She grew into a leadership role at the Charles A. Dana Center at the University of Texas at Austin before returning to Kalamazoo, MI. Today, she continues to love working with teachers to engage each student in rich discussions and sense-making to help support them to become flexible, powerful doers of mathematics. She tweets @kzoomath.

Kristine Hineman is a K-12 mathematics education consultant for Macomb County. She services 21 local school districts in curriculum development and professional learning. She has been serving in mathematics education for 25 years. She began her profession teaching high school mathematics in Utica Community Schools where she also served as the Math System Wide Co-Chair for Secondary Mathematics. She develops and facilitates professional learning for educators in any capacity that advances STEM (Science, Technology, Engineering and Mathematics) education at local, county and state levels. She is passionate about uniting teachers vertically, across grade levels and across all content areas. Her goal is to provide long-term and ongoing change in classroom instructional strategies that raise student achievement.


Lisa Scott holds a Master of Science degree in Mathematics Education and K-12 Principal Endorsement from Montana State University. She has served as Curriculum and Assessment Director and Mathematics Coach for Billings Public Schools. She also taught high school and middle school mathematics for over fifteen years. Lisa is currently a middle school mathematics teacher at Lewis & Clark Middle School, the STREAM Project Manager and a mathematics education consultant. She has provided professional development in mathematics, assessment and other topics to educators in Montana and nationally over the past twenty years. Lisa served as President of the Montana Council of Teachers of Mathematics, on the Affiliate Services Committee of the National Council of Teachers of Mathematics and on the board of directors for the National Council of Supervisors of Mathematics. Lisa earned the Presidential Award for Excellence in Mathematics Teaching in 2002. She tweets @mathlisascott.


Dr. Amy Weber-Salgo currently consults with teachers and districts as they work to improve their mathematics instruction. She was the founding Director of Mathematics Reviews for Prior to that, Amy was a regional PD provider and enjoyed 18 years as a K-8 classroom teacher. For her Educational Doctorate, her research focused on differentiating professional learning for teachers of mathematics in order to meet the needs of the teachers she serves.

New York

Andrew Gael has worked in education for over ten years and as an educator of students with disabilities for the last seven. He was born and raised in New York City, receiving his Master’s in Education from Brooklyn College. Andrew now teaches math at the Cooke Center Academy, a school for students with developmental, learning, and physical disabilities on Manhattan's lower west side. He has spoken nationally to advocate for equitable access to the highest quality math instruction for the typically under-served student population of students with disabilities. He writes about the intersection of math education, special education, and disability rights on his blog, The Learning Kaleidoscope. You can follow him on twitter @bkdidact and the bi-weekly twitter chat for students with disabilities and teaching math, #SwDMathChat

North Carolina

Jennifer Wilson a Core Advocate and National Board Certified Teacher, taught and learned mathematics with high school students and teachers for 25 years in Jackson, Mississippi. She enjoys learning alongside the Illustrative Mathematics community, and she is a 2011 recipient of the Presidential Award for Excellence in Mathematics and Science Teaching. Jennifer blogs at both Easing the Hurry Syndrome and Slow Math Movement. She tweets @jwilson828 and reflects on teaching at #AskDontTell and #SlowMath.

Kaneka Turner is learning enthusiast! Her greatest joy is coming to understand and residing in the space where confusion meets clarity. She designs and facilitates professional learning experiences for local school districts across North Carolina. She served Charlotte-Mecklenburg Schools for the past 18 years as a classroom teacher, building math coach, Title I math specialist and district math specialist, before leaving to work independently as a math consultant. She has a passion for broadening the community of math learners to include the most unexpected and often rejected. She is pursuing this passion by teaching masters courses as a visiting instructor for Mount Holyoke’s Master of Arts in Math Teaching program, facilitating Investigations Workshops for Terc and facilitating DMI workshops for local districts in need. She tweets @kanekaturner

Portia Gibbs-Roseboro has served as a passionate educator and lover of mathematics education for more than 23 years. During this time, she has had the privilege of teaching mathematics at both middle and high school levels, serving as school-based administrator, and statewide instructional coach for secondary mathematics teachers. Each of these experiences has help shape her advocacy for helping all, especially those in impoverished communities, to develop a love for mathematics. She is dedicated to helping create better educational opportunities that will help guide teachers and students in achieving their goals. She holds a Ed. D. in Educational Leadership from the University of North Carolina at Charlotte and a B.S. in Mathematics Teaching from Clemson University.

Sheila Brookshire has benefited from her 42 years of experience teaching students in both middle and high school, collaborating with teachers as an instructional coach, and facilitating professional development for teachers locally and in other districts and states. She is an active member of North Carolina Council of Teachers of Mathematics serving as Secondary Vice-President for the Western Region, Conference Program Co-chair and State Vice President for Middle School. Some of professional accomplishments include attaining NBPTS certification, being chosen as a member of NC Teacher Leadership Network, being a lead teacher for the ARMS Project, participating as a Trainer for NC Teacher Academy and facilitating for the MELT program at ASU. Although retired, she considers herself a life-long learner and continues to be actively involved in mathematics education.


David Petersen is currently a Curriculum Writing Team Lead for Illustrative Mathematics, writing and editing materials for the Middle School curriculum. David taught high school mathematics in Tennessee and Missouri for 10 years prior to joining IM. David has a masters degree in mathematics from Vanderbilt University and can be found tweeting @calcdave with other teachers about classroom activities and general topics.


Tricia Bevans teaches math content courses for pre-service elementary teachers and provides professional learning to K–12 math teachers in her role as the K-12 Outreach Specialist for the Mathematics Department at the University of Oregon. She has been involved with efforts to promote coherence in math education over the past 15 years, consulting on projects such as Standards For Success, Smarter Balanced Digital Library, and review of Khan Academy CCSSM items. She is a member of the UO’s Teaching Academy and a participant in the Summer Institutes for Scientific Teaching to improve implementation of best pedagogical practices in her own teaching. With a rocky start in elementary math that eventually led to a Masters in Mathematics from the University of Oregon, Tricia is passionate about supporting teachers in discovering the wonder and power of mathematics for themselves and their students.


Dan Ilaria is an Associate Professor of Mathematics Education and coordinator for the Secondary Education program at West Chester University. He began his teaching career as a NJ public school teacher in middle and high school before becoming a mathematics supervisor. Dan earned his B.A. in Mathematics from Drew University, M.S. in Mathematics and Ph.D. in Education from Rutgers University. In his spare time, he is T3 National Instructor, Facilitator of Professional Learning for Illustrative Mathematics, and a math coach. He is passionate about mathematics teaching and learning and enjoys working with teachers to provide the best learning experience for students.

Sallie Kaan recently retired after 24 years of math teaching in the Fox Chapel Area School District. She taught 7th grade math for 9 years and served 15 years as the district’s K-8 Mathematics Coach. In that position she coordinated the consistent implementation of the district’s K-8 math program by supporting the teachers through professional learning sessions, co-planning, and co-teaching. Sallie was excited by the increase in joy in math learning that teachers and students shared with her. She is an Army veteran and a graduate of The University of Texas at El Paso with a B.S. in Elementary Education with a concentration in mathematics. She holds a Master’s Degree from Walden University in Elementary Reading and Mathematics.

South Carolina

Patti Drawdy, a National Board Certified Teacher since 2002, is a learner and leader who seeks to spark curiosity for joyful, deep learning. After 33 years as a public school teacher, instructional coach, and curriculum specialist in high-poverty schools, she is now a Cognitive Coaching trainer with Thinking Collaborative and a consultant for mathematics learning in grades K–12. She worked with a statewide NSF Systemic Initiative to change math and science education in South Carolina, served on the SC Leaders of Mathematics Education board, reviewed federal grants, and developed pilot items for state assessments. Patti co-wrote and managed a five-year federal Math Science Partnership (MSP) grant which increased mathematics, science, and special education teachers’ pedagogical content knowledge. With teaching and coaching experiences at elementary, middle, high school, and post-secondary levels, Patti desires to nurture learning spaces that develop curious, compassionate, and confident thinkers and problem solvers. She tweets @PattiDrawdy.


Jeff Crawford works as the Lead Professional Learning Facilitator for Illustrative Mathematics. Since the early 90s, he has dedicated himself to serving students and educators. He taught in the classroom for over 20 years at university and high school levels before moving to full time educator support. Throughout his career, Jeff has continually sought out opportunities to serve the mathematical community on projects with groups like Washington State, EdReports, and Student Achievement Partners. His passion for quality instruction and materials inspires him to continue growing personally in order to bring the love of learning mathematics to communities everywhere.

Shari Hartwig is a curriculum and instructional support specialist for K–6 mathematics in the Mead School District. With over 25 years in education, she has had many roles supporting mathematics education at all levels—as a classroom teacher, a gifted specialist, an interventionist, an adjunct professor, and a professional development provider. She has worked with her state and The Smarter Balanced Assessment Consortium on the development of mathematics assessment items and performance tasks, as well as screening items for the Smarter Balanced Digital Library. She has been a Washington State Math Fellow for the last five years. She loves working to support teachers in her district as well as her region to develop a passion for teaching mathematics.


Sara Brown spent 15 years in rural, urban, and suburban high schools as a classroom teacher, department leader, and interventionist. A National Board Certified Teacher, she joined the Mathematics Institute of Wisconsin in 2014 as a Mathematics Specialist to develop and provide professional learning opportunities for middle and high school teachers throughout the state. Sara holds a M.S. in Curriculum and Instruction with a concentration in Mathematics Leadership is an active member in both local and national mathematics organizations. She tweets @mathinst_Sara

*Please note: If your state is not represented, facilitated professional learning is still available.

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