Mathematics & Computing


Early Years

There are seven areas of learning and development that must shape educational programmes in early years settings. All areas of learning and development are important and inter-connected.

  • Communication and language
  • Physical development
  • Personal, social and emotional development
  • Literacy
  • Mathematics
  • Understanding the world
  • Expressive arts and design

Key Stage 1

Pupils should be taught to:

  • Understand what algorithms are; how they are implemented as programs on digital devices; and that programs execute by following precise and unambiguous instructions
  • Create and debug simple programs
  • Use logical reasoning to predict the behaviour of simple programs
  • Use technology purposefully to create, organise, store, manipulate and retrieve digital content
  • Recognise common uses of information technology beyond school
  • Use technology safely and respectfully, keeping personal information private; identify where to go for help and support when they have concerns about content or contact on the internet or other online technologies.



Numicon Videos

The first column.



Let's Cover the baseboard



Picture Puzzles



Patterns on the board



Make a pattern and match the shape 



Remember a pattern



What's missing



Number the shapes



Match the numerals 



Number towers






Take away













The second column.



Find the matching shape 



More matching 



Threading a pattern 



Copy the pattern 



Jumbled shapes






Count the holes



Feel the number



Introduction addition facts 



Add ten 



Find the difference










Key Stage 2

Pupils should be taught to:

  • A design, write and debug programs that accomplish specific goals, including controlling or simulating physical systems; solve problems by decomposing them into smaller parts
  • B use sequence, selection, and repetition in programs; work with variables and various forms of input and output
  • C use logical reasoning to explain how some simple algorithms work and to detect and correct errors in algorithms and programs
  • D understand computer networks including the internet; how they can provide multiple services, such as the world wide web; and the opportunities they offer for communication and collaboration
  • E use search technologies effectively, appreciate how results are selected and ranked, and be discerning in evaluating digital content
  • F select, use and combine a variety of software (including internet services) on a range of digital devices to design and create a range of programs, systems and content that accomplish given goals, including collecting, analysing, evaluating and presenting data and information
  • G use technology safely, respectfully and responsibly; recognise acceptable/unacceptable behaviour; identify a range of ways to report concerns about content and contact. 


The policies below detail how addition, subtraction, mulitplication and division are taught in each year group.  The NCTEM provides information on how teachers asses understanding click here for further details. 

Department of England Mathmatics programmes of study Key stage 1 and 2.

Introduction for written calculation videos

  • Can I do it in my head?
  • Can I use some jottings to help me?
  • Should I use a written method?

In the new National Curriculum (September 2014), it is important for teachers to create real life contexts for learning in maths. As a child learns how to calculate, they need to learn how to select the best method according to the numbers they are calculating.

The order of thinking should be:

  • Can I do it in my head?

The first, and most important stage of learning how to calculate, is mental calculation. Children must understand calculation and be able to rapidly calculate numbers in their head before they can move on to more formal methods of recording their workings. They will learn to calculate mentally from Reception through to Year 2.

  • Can I use some jottings to help me?

To support calculations of larger numbers, writing some known key facts down may support processes that take more than one step.

  • Should I use a written method?

In Year 3, children begin to learn formal written methods of calculating to support their calculation of larger numbers. These videos take you through the written methods taught at St Margaret’s from Year 3 through to Year 6. Progress through these written methods must not be rushed, a secure understanding of each method is necessary before starting the next method.

Addition Strategies 

Expanded Column Addition 

Long Column Addition 

Short Column Addition in the Context of Money 

Short Column Addition in the Context of Money with Carrying 

Short Column Additon with Carrying the Ones 

Column Additon with Decimals involving Carrying 

Short Column Addition with Decimals to Different Numbers of Places 

Short Column Additional with Hundreds 

Short Column Addition 

Short Column with Three Numbers


2 digit x1 digit expanded and compact alongside 

2 digit x 1 digit expanded column 

2 digit x 1 digit grid method 

2 digit x 1 digit vertical with partitioning 

2 digit x 2 digit expanded and compact alongside 

2 digit x 2 digit method 

3 digit x 1 digit short compact



Compact Written Subtraction involving Decimals 

Compact written Subtraction involving hundreds, tens and ones

Compact written Subtraction with a Zero in the tens column

Compact Written Subtraction adjusting in the ten's and hundreds 

Compact Written Subtraction with Adjusting

Compact Written Subtraction 

Compact Written Subtraction 

Expanded Column Subtraction with Adjusting

Expanded Column Subtraction 



2 digit divided by 1 digit chunking

3 digit divided by 1 digit chunking with remainders 

3 digit divided by 1 digit chunking 

3 digit divided by 1 digit short method 

3 digit divided by 1 digit with decimals 

3 digit divided by 2 digit with decimals

Contact Us

The Primary School, The Mardens, Ifield, Crawley, West Sussex, RH11 0AQ

Mrs Hillman
01293 521077

Contact Us

The Nursery, The Mardens, Ifield, Crawley, West Sussex, RH11 0AQ

Jo Hiscock
01293 421080