Walk the fence around each shape — tap every side to lay it and the meter counts the units all the way around, then lock in the perimeter.
Fencing a shape means tapping each side in turn while a running meter adds up the units all the way around the boundary — so a child builds the perimeter by walking the edge, not by filling the inside (the area is even shown as a decoy). The play covers rectangles, rectilinear L-shapes with six sides, and a missing-side inverse where the total is given. It builds perimeter, adding the side lengths, and reading a unit grid. Best for Grades 3–5, or any learner ready to tell perimeter apart from area.
A free, no-signup, no-ads math game for Grades 3–5 — practising perimeter, add-sides, rectilinear-shapes, unit-grid, measurement. Play in your browser on the KidsDoMath games hub or explore more Measurement games.
By grade level: 3rd Grade Math Games4th Grade Math Games5th Grade Math Games
More like this: Temp TrekCapacity CanyonPerimeter Pace
What math does Perimeter Patrol practice? Perimeter Patrol practices Perimeter, Add Sides, Rectilinear Shapes, Unit Grid. Fencing a shape means tapping each side in turn while a running meter adds up the units all the way around the boundary — so a child builds the perimeter by walking the edge, not by filling the inside (the area is even shown as a decoy).
What grade is Perimeter Patrol for? Perimeter Patrol is built for Grades 3–5 (ages 8–11). It sits in the Measurement strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Perimeter Patrol? Walk the fence around each shape — tap every side to lay it and the meter counts the units all the way around, then lock in the perimeter.
Is Perimeter Patrol free to play? Yes. Perimeter Patrol is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.