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About Us

XtraMath® is a 501(c)(3) nonprofit organization that provides an online supplemental math program for students in grades K-8. Our math fact fluency program helps students develop the computational fluency that enables success in higher-level mathematics.

Mission, Goals, and Purpose

XtraMath is dedicated to math achievement for all. Our goal is to develop effective, efficient, adaptive, and intrinsically rewarding supplemental math activities. XtraMath’s purpose is to provide equitable supplemental math activities that connect with all learners. We offer schools, teachers, students, and families easy, simple, and effective math programs in areas where students struggle or need more practice.


XtraMath was founded in 2007 by David Jeschke, a former Microsoft programmer and startup developer. While volunteering as a math tutor for Seattle elementary school students, he recognized the need for an individualized math fact practice program and developed XtraMath. In 2009, XtraMath became a nonprofit organization and, through a grassroots movement, has grown to be one of the most widely used math programs in schools today.


Board of Directors

David Jeschke, President of the Board
Founder of XtraMath

David was a software programmer at Microsoft before founding XtraMath. David has a master's degree in computer science from The University of Texas, Austin.

Sabareesh Kornipalli, Treasurer of the Board
Director of Finance, Analog Devices

Sabareesh also advises several pre-Series A startup companies and sits on their board. His expertise includes portfolio management, business strategy development, P&L ownership, M&A, scaling up seed-stage companies, and fundraising.

XtraMath Team

Executive Director

Roy King

Roy was a senior marketing manager at Microsoft and entrepreneur before joining XtraMath in 2021. Roy has a degree in business administration from Richmond University in London.

Lead Developer

Sterling Nelson

Sterling has been working at XtraMath since 2013. While his background is in the life sciences, he has enjoyed working with computers and technology for most of his life. Sterling received his B.S. in Biology from the University of California, Davis.

Lead UX and Visual Designer

Irene Nelson

Marketing and Customer Engagement Manager

Jackie Orcutt

Digital Marketer

Tina Hansen

Customer Service

Gabe Bosworth


Amy King

Privacy & Legal

Brian Barrido

Contact Info

Mailing address

4700 42nd Ave SW, Suite 580
Seattle, WA 98116

Email Addresses

Please note: XtraMath provides sales and customer service support exclusively via email.