Faces & Edges

A Maths Lesson Starter of The Day

3D objects Here are some 3D shapes. What are their mathematical names?

How many faces, edges and vertices do the following objects have?

- Ritz box
- Toblerone box
- KitKat box
- Chocolate box

 


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Topics: Starter | Shape (3D)

  • Elaine Leighton, St Francis Sch, Wilts
  •  
  • An excellent set of resources although I do not use the ones which require a list of mathematical terms starting with a specific letter or the "Kim's game" activities. We particularly like the puzzle type activities. I have used several with year 6 and a few with year 5 as well as year 7 and 8.
  • y7 Mr Heeley's stars, NLC, Huddersfield
  •  
  • Dear Transum,
    We all thought that this starter would be 'solid', but it turned out to be pretty easy, because we are all experts at 3D shapes!
    Thanks for giving us an extra 'edge' to our lesson - nobody had to sit in the 'corner' today!
    Love Mr Heeley's stars xxx
  • Mrs O'hagan's 1st Year Class, Holyrood Sec School Glasgow
  •  
  • Quite good, but some of the answers were incomplete. A bit difficult to see some of the shapes.
  • Grade 9 Applied Math Class, Port Hope, Ontario, Canada
  •  
  • My grade 9 class believes that the Ritz box is a rectangular based prism, not a cuboid, as the faces are not square.
  • Mr Matt, Ho Chi Minh City, Vietnam
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  • A cuboid is another name for a rectangular based prism, only a cube must have square faces.
    Another great starter by the way.

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Answers

Ritz Box

Cuboid

6 faces

12 edges

8 vertices

Toblerone

Triangular Prism

5 faces

9 edges

6 vertices

Chocolates

Octagonal Prism

10 faces

24 edges

16 vertices

KitKat

Trapezoidal Prism

6 faces

12 edges

8 vertices

Globe

Sphere

Tin of baked beans

Cylinder

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