🔢 Mathematics · Measurement

Measuring Perimeters

Measure the perimeter of simple 2-D shapes

Typical age: 7–8 years

“If your child wants to put a decorative border around a rectangular picture frame 20 cm wide and 30 cm tall, can they work out the total length of border needed?”

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Calculating with measurementsREQUIRED
Measuring perimeter requires measuring lengths and adding them
2-D shapes (age 6+)
Perimeter of 2-D shapes requires knowing shape properties (number of sides)

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Perimeters of polygonsREQUIRED
Measuring perimeter of simple shapes is prerequisite to perimeter problem solving