About Numra

Numra is a free collection of interactive math manipulatives built for K-5 classrooms. Our mission is to make hands-on math accessible to every teacher and student, 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 free, instantly available, and visible on every screen in the room. Numra brings the best of hands-on math to any device with a browser.

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 tracking, no data collection from students. COPPA compliant from day one.

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.