How to play
A nature park's gardens need fences (perimeter) and trails need measuring (area). Each round, drag fence-posts around a garden's edge to compute its perimeter, or tile a region with unit squares to compute its area. The park ranger gives you the answer band you need to land in ("between 18 and 22 metres") and the game congratulates accuracy; over-shooting the band asks you to retry.
What your child will learn
- Identify and classify 2D shapes
- Measure perimeter and area
Skills practiced
- Spatial reasoning
- Measurement
Why this age range
Tuned for grades 3–4. Younger children find the unit-tile counting tedious; older children breeze through and want algebraic shortcuts the game doesn't offer. The grade-3 and grade-4 standards specifically call out perimeter and area as distinct concepts, and the game tracks that distinction.
Curriculum standards
- CCSS.MATH.2.G.A.1
- CCSS.MATH.3.MD.D.8
Notes for parents
The classic mistake on this topic — confusing perimeter with area — happens because both are taught the same week with the same rectangles. Perimeter Patrol separates them clearly. Perimeter is fences (a length); area is tiles (a coverage). Once your child has felt the difference in this game, they're far less likely to mix them up on a test.