Mathematics
Measurement
Procedural
7–8 yrs
Measuring Perimeters
测量周长
Description
Measure the perimeter of simple 2-D shapes
Mastery Evidence
- Measure each side of a rectangle and add the lengths to find the perimeter
- Calculate the perimeter of a regular shape given the side length
- Explain that perimeter is the total distance around a shape
Assessment Prompt
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?
