IXL Math. Illustrative Mathematics. CK-12. CK-12 studyNow! for iPad. Illuminations Mathematics. Okta's Rescue. Pick-a-Path. Math Concentration. Deep Sea Duel.
Equivalent Fractions. NCTM Mobile. National Library of Virtual Manipulatives. TenMarks Education. Xtra Math. XtraMath is a Seattle-based 501(c)(3) nonprofit organization dedicated to math achievement for all.
Our goal is to develop effective, efficient, adaptive and intrinsically rewarding supplemental math activities and make them available for free. David Jeschke XtraMath started in the fall of 2007 when David Jeschke, a computer programmer, volunteered at a local elementary school and recognized the need for an individualized math practice program. XtraMath spread rapidly to other classrooms by word of mouth and the program continues to evolve to meet the needs of the students, teachers, and parents.