Year 4

# Consolidating 3D shape learning

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## Lesson details

### Key learning points

- In this lesson, we will consolidate our learning of 3D shapes by recapping out previous learning: key vocabulary, properties of 3D shapes and categorising of 3D shapes.

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### 5 Questions

Q1.

How many edges does a triangular prism have?

5

7

8

Q2.

'Cubes and cuboids have the same number of edges.' Is this statement true or false?

False- cubes have 10 edges and cuboids have 12 edges.

False- it depends on the size of the cube and cuboid.

True- they both have 10 edges.

Q3.

Identify one of the differences between a triangular prism and a triangular-based pyramid.

A triangular prism has fewer vertices than a triangular-based pyramid.

A triangular prism is always bigger than a triangular-based pyramid.

A triangular-based pyramid is always bigger than a triangular prism.

Q4.

'I have 2 flat surfaces and 1 curved surface. I also have 2 curved edges.' What am I?

Cone

Cube

Sphere

Q5.

'I have 8 faces and 12 vertices. I also have 18 edges.' What am I?

Octagonal prism

Pentagonal prism

Triangular prism

### 5 Questions

Q1.

What is the definition of the 'face' of a 3-D shape?

A flat surface of the 3-D shape.

The corners where the edges of the shape meet.

The part of the shape where 2 surfaces meet.

Q2.

'It is possible for a shape to have more vertices than faces.' Is this statement true or false?

False- the number of vertices is always less than the number of faces.

False- the number of vertices is always the same as the number of faces.

True- but it is not possible to have less vertices than faces.

Q3.

Which of the following 3-D shapes has the most vertices?

Cuboid

Hexagonal prism

Pentagonal prism

Q4.

Which of the following 3-D shapes has both curved and flat faces?

Cube

Hexagonal prism

Sphere

Q5.

Which of the following is another term for a triangular-based pyramid?

Pentagonal prism

Square-based pyramid

Triangular prism