About Numra
Numra is a growing collection of interactive math manipulatives built for K-5 classrooms. Six core tools will stay free forever, while Pro will unlock the complete library and every feature we add. Our mission is to make hands-on math accessible on any device.
Why We Built This
Physical math manipulatives — base ten blocks, fraction strips, pattern blocks — are powerful teaching tools. But they're expensive, easy to lose, and hard to share with a whole class at once.
Virtual manipulatives solve these problems. They're instantly available and visible on every screen in the room. Numra keeps essential tools free while building an increasingly complete classroom toolkit.
What We Believe
Zero Barriers
No login, no install, no paywall for core tools. Share a link and start teaching.
Teachers First
Every tool is designed for the classroom: full-screen, large type, projection-friendly.
Privacy by Design
No ads, no student accounts, and no personal data requested from students.
Works Everywhere
Smartboards, Chromebooks, iPads, phones. If it has a browser, it runs Numra.
Get in Touch
Questions, feedback, or partnership inquiries? Reach us at hello@numra.cc.