Grade 6 · Mathematics
Finding surface area from nets in Grade 6
Your child uses nets to calculate the total area covering a prism or pyramid.
Where this sits in the year
One skill in the Grade 6 constellation
A practical map of the math skills learners build through Grade 6. Exact timing varies by curriculum.
How it's taught now
Students unfold three-dimensional objects, label congruent faces, and add face areas without double-counting.
Three mistakes to watch for
Leaving out a hidden face.
Confusing surface area with volume.
Counting a shared edge as an area.
A worked example
Find the surface area of a 5 cm by 3 cm by 2 cm rectangular prism.
There are two faces of each pair: 5×3, 5×2, and 3×2.
Answer: 62 cm²
Try this together
If you unwrap a cereal box flat, which rectangles do you need to measure?
Give them a moment to talk it through. The explanation matters more than a quick answer.