Naming Shapes

3D shapes

- properties

- nets

Open Ended

What is the difference between 2D and 3D shapes?

Names and properties of 3D shapes

• faces and their shapes

• vertex and vertices

• edges (sides)

Open Ended

Can you name this shape?

How many faces, vertices and edges?

Cone

• 2 faces

• 1 edge

• 1 vertex

Open Ended

Can you name this shape?

How many faces, vertices and edges?

Cube

• 6 faces

• 8 vertices

• 12 edges

Open Ended

Can you name this shape? Can you name this shape?

How many faces, vertices and edges?

Cuboid

• 6 faces

• 8 vertices

• 12 edges

Open Ended

Can you name this shape? Can you name this shape?

How many faces, vertices and edges?

Triangular prism

• 5 sides (2 triangles, 3 rectangles)

• 6 vertices

• 9 edges

Open Ended

Can you name this shape? Can you name this shape?

How many faces, vertices and edges?

Cylinder

• 3 faces (2 circles, 1 rectangle)

• no vertices

• 2 edges

Open Ended

Can you name this shape? Can you name this shape?

How many faces, vertices and edges?

Square based pyramid

• 5 faces (1 square, 4 triangles)

• 5 vertices

• 8 edges

Open Ended

Can you name this shape? Can you name this shape?

How many faces, vertices and edges?

Sphere

• 1 surface

• no vertices

• no edges

What you can remember?

Multiple Choice

A 3-D shape can also be called...

• a flat shape

• a solid shape

• a polygon

A 3-D shape can also be called...

- A flat shape is 2D shape.

- The same polygon - it is 2D shape. (It has at least 3 sides and all sides are straight lines.)

Therefore 3D shape can be called: a solid shape.

Multiple Choice

"Corners" are called:

• Edges

• Faces

• Vertices

• Sides

Multiple Choice

A solid object has six faces which are all squares. What is the name of this object?

• Cylinder

• Cube

• Cuboid

A solid object has six faces which are all squares. What is the name of this object?

Cube

Multiple Choice

The shape of a can of soup is an everyday example of a...

• Cylinder

• Cube

• Cuboid

The shape of a can of soup is an everyday example of a...

Cylinder

Multiple Choice

What is the name of this shape?

• Cube

• Triangular prism

• Cuboid

• Cylinder

What is the name of this shape?

Cuboid

Multiple Choice

A 3-D shape has been opened up to a flat 2-D shape (a net) and is shown below? What was the 3-D shape?

• a sphere

• a cone

• a cylinder

A 3-D shape has been opened up to a flat 2-D shape (a net) and is shown below? What was the 3-D shape?

A cylinder

Multiple Choice

Which two mathematical shapes could you combine to make this building?

• Cone and sphere

• Cylinder and sphere

• Cone and cylinder

Which two mathematical shapes could you combine to make this building?

Cone and cylinder

Multiple Choice

How many edges does a cube have?

• 6

• 8

• 10

• 12

How many edges does a cube have?

12

Poll

Naming 3D shapes

• I understand it very well

• I need more practice

• I don't understand

Poll

Describing properties of 3D shapes

• I understand this very well

• I need more practice

• I don't understand

Poll

Nets of 3D shapes

• I understand this very well

• I need more practice

• I don't understand

Poll

What was your effort and engagement during the lesson?

• I was working very hard

• I could have try better. I was distracted or not fully engaged.

• I did not try!