Pour the value of x into the expression, then collapse the tiles one legal step at a time — multiply before you add, parentheses first.
Each expression is built from tiles on a lab bench. Children pour the given x-value from a beaker into every x tile, then collapse the expression one legal operation at a time — multiply before you add, parentheses always first; wrong-order taps bounce, teaching order of operations by feel. Covers ax + b, a + bx, a(x + b), expressions where x appears twice, and x². A strong fit for Grades 4–6, or any child taking their first steps into algebra.
A free, no-signup, no-ads math game for Grades 4–6 — practising expressions, substitution, variables. Play in your browser on the KidsDoMath games hub or explore more Coordinates & Algebra games.
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What math does Expression Lab practice? Expression Lab practices Algebra, Substitution, Variables. Each expression is built from tiles on a lab bench.
What grade is Expression Lab for? Expression Lab is built for Grades 4–6 (ages 9–12). It sits in the Coordinates & Algebra strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Expression Lab? Pour the value of x into the expression, then collapse the tiles one legal step at a time — multiply before you add, parentheses first.
Is Expression Lab free to play? Yes. Expression Lab is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.