Steer falling fraction bricks into rows that are each one whole, and clear a row only when its bricks add up to exactly 1.
Fraction Stack plays like Tetris: fraction bricks (halves, thirds, quarters, sixths and eighths) fall into a well that is exactly one whole wide, the child steers each brick over a gap and drops it, and a row clears only when its bricks add up to exactly 1. Rotating is swapping a brick for an equal split (1/2 turns into an upright 1/4 + 1/4), so equivalent fractions become a move, and the row totals are counted in a common denominator (3/4 + 1/8 = 7/8, one eighth short). It targets the belief that any two fractions that look about right make a whole, and when the stack gets too tall the top row dissolves with its real total instead of ending the game. Best for Grades 3–5.
A free, no-signup, no-ads math game for Grades 3–5 — practising adding-fractions, equivalent-fractions, common-denominator, unit-fractions. Play in your browser on the KidsDoMath games hub or explore more Fractions games.
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What math does Fraction Stack practice? Fraction Stack practices Adding Fractions, Equivalent Fractions, Common Denominator, Unit Fractions. Fraction Stack plays like Tetris: fraction bricks (halves, thirds, quarters, sixths and eighths) fall into a well that is exactly one whole wide, the child steers each brick over a gap and drops it, and a row clears only when its bricks add up to exactly 1.
What grade is Fraction Stack for? Fraction Stack is built for Grades 3–5 (ages 8–11). It sits in the Fractions strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Fraction Stack? Steer falling fraction bricks into rows that are each one whole, and clear a row only when its bricks add up to exactly 1.
Is Fraction Stack free to play? Yes. Fraction Stack is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.