Starter quiz
- A ______ is a flat (2D), closed figure made up of straight line segments.
- 'polygon' ✓
- A __________ is any polygon that has four straight sides.
- kite
- quadrilateral ✓
- rectangle
- rhombus
- square
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- Select the properties of a regular -sided polygon.
- equal angles ✓
- equal angles
- equal side lengths ✓
- Rotational symmetry of degree ✓
- lines of symmetry
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- Select the 3D shapes.
- cone ✓
- cuboid ✓
- dodecagon
- prism ✓
- trapezium
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- A cuboid has ______ faces.
- '6' ✓
- A triangular prism has ______ faces.
- '5' ✓
Exit quiz
- The ______ of a 3D object is a 2D representation of its surfaces that can be folded up into the 3D object.
- 'net' ✓
- A solid is created from regular quadrilaterals and regular hexagons only. Which of these nets could be for the solid?
The diagram shows a net of a ______.- 'cylinder' ✓
Which of these diagrams shows a net for a tetrahedron?- Which of these diagrams show a net of a cube?
Which of the following rectangles can be used to create the net of a cuboid?- A, C and G
- A, C and E ✓
- B, F and G
- C, E and F
- D, E and F
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- A net is composed of polygons.
- Folding a net along certain edges and joining others, produces a solid.
- By studying the polygons in the net, you can deduce what solid is made.
- By studying the solid, you can draw the net.
Common misconception
Pupils may misconfigure the net, believing that as long as the shapes of the faces are correct, the net will fold to be the desired 3D shape.
Have pupils mark/label/colour the edges that will join upon folding the net, this will ensure they are the correct length.
Keywords
Net - The net of a 3D object is a 2D representation of its surfaces that can be folded up into the 3D object.
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