apr19-30 yr 2 geometry 3
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copyright 2019Yr 2 | Page 1
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3 faces2 edges0 vertices
6 faces12 edges8 vertices
2 faces1 edge1 vertex
Geo
met
ry Challenge Maths:Properties of 3D Shapes
We are learning to:
Identify and describe the properties of 3D shapes, including the number of edges, vertices and faces
Challenge 1
1) Circle the shapes that are not in the right box.
No curved sides 1 or more curved sides
An even number of sides
An odd number of sides
2) Draw lines to match each shape to its description.
copyright 2019Yr 2 | Page 2
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Geo
met
ry 3) Tia says, “This shape is a cube.” Molly says, “This shape is a cuboid.”
Who is correct? Explain your answer.
Challenge 2
4) Jake has found 1 side of a 3D shape.
He says, “This must be part of a cube.”
Is he correct? Explain your answer.
5) Look at the shapes in this Venn diagram. Add labels to each circle.
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Geo
met
ry 6) Write down differences and similarities between each pair of shapes.
Similarities Differences
Can you draw or name a shape that matches this description?
“I am thinking of a shape. It has: 2 flat surfaces, 1 curved surface, 0 flat edges, 2 curved edges and 0 vertices.”
7) Amy says:
copyright 2019Yr 2 | Page 4
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Geo
met
ry Challenge 3
8) You will need modelling clay and straws for this investigation.
What 3D shape can you make using the smallest amount of modelling clay and straws?
I have made this shape using modelling clay and straws. Can you continue to make this a 3D shape? How many different shapes can you create with the same base?
Answers
copyright 2019Yr 2 | Page 5
Geo
met
ry
Challenge 1
Challenge 2
1) Shapes in the wrong box
No curved sides 1 or more curved sides
An even number of sides
An odd number of sides
3 faces2 edges0 vertices
6 faces12 edges8 vertices
2 faces1 edge1 vertex
3) They are both correct. A cube is a type of cuboid.
4) Jake is not correct. This could also be a side to a cuboid or square-based pyramid.
2)
5) A possible answer: Circle one: Flat faces Circle two: Curved faces
copyright 2019Yr 2 | Page 6
Geo
met
ry
Challenge 3
6)
Similarities Differences
No curved faces
No curved edges
The cube has more faces,
edges and vertices.
Cube 6 faces 12 edges 8 vertices
Pyramid 5 faces 8 edges 5 vertices
No curved faces
No curved edges
Same number of
faces
The prism has more
edges andvertices.
Prism 9 edges 6 vertices
Pyramid 8 edges 5 vertices
7) cylinder
8) Children can add straws to the shape to create a cube, cuboid and square-based pyramid.
A triangular-based pyramid uses the smallest amount of straws.