Undo each operation on both sides of a two-step inequality, flip the symbol when you divide by a negative, then drag the endpoint, set it open or closed and shade the solution set on the number line.
A two-step inequality such as −3x + 4 ≤ 16 runs through an engine: the player reverses each operation on both sides with op buttons, and flipping the inequality symbol after dividing by a negative is a separate, deliberate move that a test point then confirms or contradicts. On the number line they drag the boundary dot, choose an open or closed endpoint, and shade the side that satisfies the inequality, including reversed forms like −4 ≥ x. It targets the forgotten sign flip and the open-vs-closed endpoint. Best for Grade 7.
A free, no-signup, no-ads math game for Grade 7 — practising inequalities, two-step, number-line, negative-numbers. Play in your browser on the KidsDoMath games hub or explore more Coordinates & Algebra games.
By grade level: 7th Grade Math Games
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What math does Inequality Engine practice? Inequality Engine practices Inequalities, Two Step, Number Line, Negative Numbers. A two-step inequality such as −3x + 4 ≤ 16 runs through an engine: the player reverses each operation on both sides with op buttons, and flipping the inequality symbol after dividing by a negative is a separate, deliberate move that a test point then confirms or contradicts.
What grade is Inequality Engine for? Inequality Engine is built for Grade 7 (ages 12–13). 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 Inequality Engine? Undo each operation on both sides of a two-step inequality, flip the symbol when you divide by a negative, then drag the endpoint, set it open or closed and shade the solution set on the number line.
Is Inequality Engine free to play? Yes. Inequality Engine is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.