Tilt one line through the origin until every table point sits on it — the handle at x = 1 reads k, y = kx, and a non-proportional decoy visibly refuses to line up.
The constant of proportionality as a tilt: a table's (x, y) pairs are plotted and the player pivots a line anchored at (0, 0) until every point sits on it, reading k at x = 1 and the equation y = kx live. Table mode fills missing y cells so each pair lands on the ray through the origin; decoy mode plants one non-proportional pair that fails to line up and must be ejected. Targets the 'any straight line is proportional' and 'add instead of multiply' misconceptions with misses that name the next move. Best for Grades 7–8.
A free, no-signup, no-ads math game for Grade 7 — practising proportional-relationships, constant-of-proportionality, unit-rate, ratios, graphing, ratio-table. Play in your browser on the KidsDoMath games hub or explore more Ratios & Rates games.
By grade level: 7th Grade Math Games
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What math does Constant K Cove practice? Constant K Cove practices Proportional Relationships, Constant of Proportionality, Unit Rate, Ratios. The constant of proportionality as a tilt: a table's (x, y) pairs are plotted and the player pivots a line anchored at (0, 0) until every point sits on it, reading k at x = 1 and the equation y = kx live.
What grade is Constant K Cove for? Constant K Cove is built for Grade 7 (ages 12–13). It sits in the Ratios & Rates strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Constant K Cove? Tilt one line through the origin until every table point sits on it — the handle at x = 1 reads k, y = kx, and a non-proportional decoy visibly refuses to line up.
Is Constant K Cove free to play? Yes. Constant K Cove is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.