Surface area of prisms
I can find the surface area of 3D shapes in an efficient way.
Surface area of prisms
I can find the surface area of 3D shapes in an efficient way.
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Lesson details
Key learning points
- The surface area of a 3D shape is the sum of the area of all the faces.
- The net of a prism can help find the surface area of a prism but can be time consuming.
- By using known area facts, the area of all the faces can be found and summed.
- It is important to find the surface area systematically and efficiently.
Keywords
Prism - polyhedron with base and identical parallel opposite side with corresponding edges joined by parallelograms.
Faces - Faces are the flat 2D surfaces of a 3D shape.
Nets - The net of a 3D object is a 2D representation of its faces that can be folded up into the 3D object.
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.
Common misconception
Pupils may try to avoid sketching of nets or faces and in turn miss information.
Reassure pupils that a sketch does not need to be perfect and just needs to convey the key information.
To help you plan your year 8 maths lesson on: Surface area of prisms, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 8 maths lesson on: Surface area of prisms, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Explore more key stage 3 maths lessons from the Perimeter, area and volume unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
rectangular base -
cuboid
square base -
cube
pentagonal base -
pentagonal prism
triangular base -
triangular prism
Exit quiz
6 Questions
