Checking and securing understanding of surface area of cuboids
I can efficiently calculate the surface area of cubes and cuboids.
Checking and securing understanding of surface area of cuboids
I can efficiently calculate the surface area of cubes and cuboids.
Lesson details
Key learning points
- The surface area of a solid is the sum of the area of all the faces.
- The net of a cuboid can help find the surface area.
- The surface area of a cuboid can be found without drawing the net.
Common misconception
When working out the surface area, the pupil may only find the sum of the areas of three faces of a cuboid (for example the visible sides in a 3D drawing), instead of all six faces.
Encourage pupils to sketch the net of the cuboid as part of their solution. This will provide a visual reminder to the pupil to find the area of all six faces, as well as making it easier to check their answer.
Keywords
Surface area - The surface area is the total area of all the surfaces of a closed 3D shape. The surfaces include all faces and any curved surfaces.
Net - The net of a 3D object is a 2D representation of its surfaces that can be folded up into the 3D object.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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