Grade 3 Lesson plan
Juniper Bend Water Tower Fence: A Grade 3 Perimeter Lesson
A 45-minute grade 3 lesson where students find the perimeter of rectangular water-tower lots and a missing side length for a fictional town's fence.
Common Core Math · Grade 3
3.MD.D.8 Solve real-world perimeter problems
Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.
Why water teaches this standard well
Students find the perimeter of a rectangular rain garden or reflecting pool that needs an edging border, then work backward to find a missing side length from a partial measurement. Comparing two ponds with the same perimeter but different areas foreshadows the tradeoffs engineers weigh when sizing a stormwater basin.
Materials tagged with this code are written to the full standard , and each carries a written note explaining the alignment. See how we review materials.
6 materials aligned to 3.MD.D.8
Lesson plans
Grade 3 Lesson plan
Redstone Creek's Rain Garden Border: A Perimeter Lesson
A grade 3 math lesson where students find the perimeter of a rain garden that catches roof runoff, then compare two garden shapes that share a perimeter.
Worksheets
Grade 3 Worksheet
Clovermead Wetland Beds: A Grade 3 Missing Side Worksheet
A grade 3 worksheet where students find perimeters and then work backward to a missing side length for the rectangular treatment beds of a fictional town wetland.
Grade 3 Worksheet
Tallow Creek's Settling Pond Fences: A Grade 3 Perimeter Worksheet
Students find the perimeter of the rectangular settling ponds at a fictional water renewal center, find a missing side, and compare two ponds that need equal fence.
Math problem sets
Grade 3 Math problem set
Lowmeadow Park Pipe Loop: A Grade 3 Design Math Set
A grade 3 problem set measuring two water pipe routes around a fictional park ball field, then choosing the plan that reaches four fountains within a limit.
Quizzes & test questions
Grade 3 Quiz & test questions
Otterbrook School's Water Week: A Grade 3 Math Quiz
An eleven-item, 22-point quiz set at a fictional school's water week, mixing equal groups, liters, two-step problems, and the perimeter of a splash pad.