About NumberVerse Play

How it works

NumberVerse is about number sense — how numbers are built, where they sit, and how quantity is structured.

• Number Studio — build a number from base-ten blocks (thousands, hundreds, tens, ones); the standard, expanded, and word forms update together, and you can trade 10 of one place for 1 of the next to regroup.
• Number Line — place a number where it belongs, round to the nearest ten or hundred, work with negatives and absolute value, and add or subtract by choosing your own jumps.
• Rekenrek — a two-row bead rack. See a quantity in a quick flash (in fives and tens, not one-by-one), and build make-ten pairs.
• Concept kits — 12 short question rounds, from place value up to integers and absolute value.

Our privacy promise

NumberVerse Play is free, works offline, and collects nothing. No accounts, no ads, no tracking, and no data ever leaves your device — your progress, level, and streak are saved only in this browser.

Mistakes are part of it

You never lose anything for a wrong try. Wrong answers get a gentle explanation, and hints teach you how to think it through — not just the answer.