3.2.2

3D Shapes

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3D Shapes

3D shapes are three-dimensional and have depth.

Cubes

Cubes

  • A cube has 6 square faces.
Cuboids

Cuboids

  • A cuboid has 6 rectangle faces.
Square-based pyramid

Square-based pyramid

  • A square-based pyramid is made up of 1 square face and 4 triangle faces.
Other pyramids

Other pyramids

  • You can have pyramids with other shaped bases.
    • A triangular-based pyramid has a triangle base.
    • A square-based pyramid has a square base.
    • A hexagonal-based pyramid has a hexagonal base.
Triangular prism

Triangular prism

  • Triangular prisms have 2 triangular faces and 3 rectangular faces.
Cylinder

Cylinder

  • Cylinders have two circular faces on each end.
Cone

Cone

  • Cones have a circular face on its base.

Making 3D Shapes

We can make 3D shapes out of various materials like cardboard or modelling clay.

Modelling clay

Modelling clay

  • Try to make it as round as possible for a sphere.
  • Squeeze it between your finger and thumb to turn it into a cube, pyramid, prism or cone.
Making 3D frames

Making 3D frames

  • We can use uncooked spaghetti and jelly-babies to make 3D shape frames.
    • Cut the jelly-babies in half.
    • Use the spaghetti to join the jelly-babies together.
    • Use 8 half jelly-babies to form the vertices (corners) of a cube.
    • Use 12 equal-length pieces of spaghetti to make the edges of a cube.
Making 3D frames cont.

Making 3D frames cont.

  • Try to make a triangular-based pyramid (tetrahedron) and a triangular prism.
  • Count how many jelly-babies (vertices) you needed for each.
  • Count how many spaghetti pieces (edges) you needed.
  • A tetrahedron has 4 vertices and 6 edges.
  • A triangular prism has 6 vertices and 9 edges.
Jump to other topics
1

Year 3 - Number

1.1

Number & Place Value

1.1.1Multiples1.1.2Counting in Multiples1.1.3Recognising Three-Digit Numbers1.1.4Finding 10 More or Less than a Number1.1.5Finding 100 More or Less than a Number1.1.6Ordering & Comparing Numbers up to 1,0001.1.7Writing & Reading Numbers1.1.8Representing Numbers
1.2

Addition & Subtraction

1.2.1Mental Addition & Subtraction1.2.2Column Method1.2.3Estimating Calculations1.2.4Inverse Operations1.2.5Missing Number Problems1.2.6Real-Life Problems
1.3

Multiplication & Division

1.3.1Times Tables1.3.2Using Times Tables1.3.3Multiplying Numbers1.3.4Missing Number Problems1.3.5Real-Life Problems
1.4

Fractions

1.4.1Tenths1.4.2Fractions1.4.3Fractions Equal to a Whole1.4.4Equivalent Fractions1.4.5Fractions of Shapes1.4.6Fractions of Amounts1.4.7Add & Subtract Fractions1.4.8Compare & Order Fractions
2

Year 3 - Measurement

2.1

Length

2.1.1Length2.1.2Comparing Lengths2.1.3Add & Subtract Lengths2.1.4Perimeter
2.2

Mass

2.2.1Mass2.2.2Comparing Masses2.2.3Add & Subtract Masses
2.3

Volume & Capacity

2.3.1Volume & Capacity2.3.2Comparing Volumes2.3.3Add & Subtract Volumes
2.4

Money

2.4.1Money2.4.2Counting Money2.4.3Adding & Subtracting Money
2.5

Time

2.5.1Units of Time2.5.2Clocks2.5.3Telling the Time2.5.4Time of the Day2.5.512-Hour & 24-Hour Clocks2.5.6Measuring Time
3

Year 3 - Geometry

3.1

Angles

3.1.1Angles in Degrees3.1.2Types of Angle
3.2

Properties of Shapes

3.2.12D Shapes3.2.23D Shapes
3.3

Straight Lines

3.3.1Straight Lines3.3.2Parallel & Perpendicular Lines
4

Year 3 - Statistics

4.1

Statistics

4.1.1Statistics4.1.2Pictograms & Bar Charts
5

Year 4 - Number

5.1

Number & Place Value

5.1.1Counting in Multiples5.1.2Recognising Four Digit Numbers5.1.3Find 1,000 More or Less than a Number5.1.4Negative Numbers5.1.5Ordering & Comparing Numbers Over 1,0005.1.6Representing Numbers5.1.7Rounding Numbers5.1.8Roman Numerals
5.2

Addition & Subtraction

5.2.1Written Methods for Adding Large Numbers5.2.2Written Methods for Subtracting Large Numbers5.2.3Estimation & Inverse Operations5.2.4Solving Two-Step Problems
5.3

Multiplication & Division

5.3.1Times Tables5.3.2Using Times Tables5.3.3Multiplication Rules5.3.4Column Method5.3.5Factors
5.4

Fractions & Decimals

5.4.1Identifying Equivalent Fractions5.4.2Adding & Subtracting Fractions5.4.3Hundredths5.4.4Decimals5.4.5Converting Between Decimals & Fractions5.4.6Rounding Decimals5.4.7Ordering Decimals
6

Year 4 - Measurement

6.1

Units

6.1.1Metric Measurements6.1.2Adding & Subtracting Money
6.2

Time

6.2.1Converting Units of Time6.2.2Changing the 12-Hour Clock to the 24-Hour Clock6.2.3Changing the 24-hour Clock to the 12-Hour Clock
7

Year 4 - Geometry

7.1

Properties of Shapes

7.1.1Symmetry7.1.2Types of Triangle7.1.3Quadrilaterals
7.2

Perimeter & Area

7.2.1Perimeter7.2.2Area
7.3

Position & Direction

7.3.1Coordinates7.3.2Translation
8

Year 4 - Statistics

8.1

Statistics

8.1.1Types of Data8.1.2Pictograms & Bar Charts8.1.3Line Graphs

Practice questions on 3D Shapes

Can you answer these? Test yourself with free interactive practice on Seneca — used by over 10 million students.

  1. 1
    What 2D shapes are a square-based pyramid made up of?Multiple choice
  2. 2
    What 2D shapes are a cuboid made up of?Multiple choice
  3. 3
    What 2D shapes are a cube made up of?Multiple choice
  4. 4
    What kind of spaghetti can you use to make a 3D frame?Multiple choice
  5. 5
    How many pieces of spaghetti would you need to make a triangular prism?Multiple choice
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2D Shapes

Straight Lines