Our Content Specialists
We're working hard to ensure our math content rigorously and comprehensively covers the Common Core Standards, a set of math standards that most of the states in the U.S. have adopted. Like the authors of the Standards, we believe that conceptual understanding, procedural fluency, and application are all critical and complementary features of an excellent math education. By covering the Standards, we hope to provide rich and engaging math content that can help students of all ages learn math thoroughly and joyfully.
To cover the Standards, we've brought on a team of fantastic math teachers, tutors, and professors, who write math questions and peer review one another's content. We regularly deploy new Common Core-aligned content on our site and refine it based on user feedback. We're also fortunate to partner with organizations and advisors whose insightful input helps us continuously improve our content.
Check out our Common Core resources, including a complete mapping of our content to Common Core Standards.
Meet our content specialists
Lisa is a K-8 Math Specialist in Aventura, Florida who is passionately devoted to helping children and adults make sense of math. She serves on the editorial panel for the National Council of Teachers of Mathematics journal Teaching Children Mathematics and has published problem sets and a research study on visual models in problem solving.
Lisa also presents nationally on Common Core Math and Singapore Math, blogs at mathspot.net, and designs mobile apps for Common Core Math.
Born and raised in Minnesota, Justin studied physics at Gustavus Adolphus College and materials science at the University of Minnesota.
He used to look at tiny things with electron microscopes, but working with Khan Academy sounded even cooler!
After growing up on an Iowa farm, Duane received a PhD in mathematics from Colorado State University. Duane has been on the mathematics faculty at Loras College and Loyola Marymount University and is currently entering his 28th year as a Lecturer in the Department of Mathematics at the University of California, Davis.
Duane is an avid bicyclist, international traveler, and goodwill basketball ambassador, and he's been a member of the UC Davis men's basketball coaching staff for 18 years.
Per used to teach math to high-school students in Chicago Public Schools.
Now, in addition to writing math problems, he teaches math to college students and studies set theory in Berkeley.
Ivan completed his undergraduate studies in Electrical Engineering, then did a M.Sc. in Physics, and a Ph.D. in Computer Science, all at McGill University.
His research interests include information theory (quantum stuff) and machine learning (data stuff). Ivan has been teaching math and physics for more than 12 years as a private tutor. He recently wrote a math textbook and founded a textbook publishing company.
Rhonda is Professor Emeritus at Bryn Mawr College, where she taught and did research in mathematics for thirty-one years.
She also co-founded The EDGE Program (Enhancing Diversity in Graduate Education), which supports women pursuing PhDs in the mathematical sciences. She served as its Co-Director from 1998-2011.
Sandy has a deep love of teaching math at any level to students, parents, and random people on the street.
Her favorite Einstein quote is, "If you can't explain it simply, you don't understand it well enough." Before working at KA, she was an electrical engineer, a high school math teacher, and a tutor for students aged 7 to 70.
Sharon is a teacher to the very core, having taught kids, adults, and adults who teach kids in Bay Area schools. She relishes doing whatever it takes to help others see the beauty and elegance in math.
Sharon was drawn to Khan Academy when she started messing with it herself and saw its potential for changing how education happens.
Ryan hails from North Carolina. He earned his undergraduate degree in Mathematics from Reed College.
In his free time, he enjoys frustrating video games and playing tennis poorly.
Jamie spent a bunch of time solving Khan Academy math exercises. Now he's lucky enough to write some of these exercises.
Previously, he tutored students of all ages in math and received his B.S. in Math from Stanford.
Lori is a university instructor in Louisiana. For the past 5 years, she's taught and coordinated freshman-level college algebra and precalculus courses.
She received her B.S. in Mathematics from the University of Illinois at Urbana-Champaign and her M.S. in Mathematics from Southern Illinois University at Carbondale.
Tara is a math teacher at Ben Franklin High School in New Orleans.
Prior to that, she was living, learning, and teaching in Philadelphia. She earned her M.S. in math education from Drexel.
In life, as in mathematics, Tomer is always looking for new adventures and uncharted territories to explore. In between traveling around the world, he earned a bachelor's degree in Mathematics and a master's degree in the History and Philosophy of Science in Tel Aviv University.
He is hoping to combine his experience as a tutor with his theoretical knowledge to bring fresh and surprising approaches to familiar mathematical subjects.
After graduating at the top of his Chemical Engineering class at IIT, Bombay, Shriram went on to get a Doctorate at University of Delaware. He has been teaching analytical reasoning and math and tutoring students in the SAT, AP Calculus, the GRE and the GMAT for over ten years.
Shriram splits his time between Pune, India, and San Francisco, USA, and enjoys training for and participating in marathons and learning Indian classical music.
Chanda teaches full-time in Acadia Parish in Louisiana. She has been busy implementing the Common Core State Standards in her own classroom as well as helping other teachers implement the standards in their classrooms through several projects with the Louisiana Department of Education.
Chanda is a member of the Louisiana PARCC ELC and the EQuIP Jury. She has a MEd in Curriculum from UL Lafayette.
Chris is a test prep tutor living in Oakland, California. He earned a degree in cognitive science from UC Berkeley in 2010. He also spends his time writing for an education blog and singing in a cappella groups.
As a tutor, Chris is able to help only those students whose families can afford expensive tutoring, so he is excited to be part of a project that will help bring education to students of all backgrounds.
As a graduate from Rowan University, Matt currently works as a middle school and high school math teacher in New Jersey. He also works with Student Achievement Partners to facilitate large group discovery of the Common Core Standards and how to implement them effectively.