Sudbury Primary School

Key lesson features

• Mastering mathematical understanding
• Mastering mathematical thinking
• Mastering mathematical language

What does a Mathematics Mastery look like at Sudbury Primary School?

• 6 parts (Do Now, New Learning, Talk Task, Developed learning, Independent Task, Plenary)
• Concrete objects (Concrete, pictorial, abstract)
• Partner talk tasks
• Use of full sentences
• Transitions
• Maths meetings
• A maths lesson is made up of 6 parts.  Some are quick 5 minute refreshers, practising a skills, other parts are longer and teaching the children something new and also include opportunities to have a go with a partner.  We have a CPA approach to maths – simply concrete meaning actual objects used (cubes, beadstring, dienes/place value blocks etc.), Pictorial – how you can draw the maths and ABSTRACT – the numbers and symbols. 

The Big Picture gives conceptual understanding in real life situations – why we are learning the maths?

Examples of unit themes for each year group.  Year 1 Fairy tales (Goldilocks, Red Riding Hood), Year 2 jobs (builder, teacher, tailor), Year 3 famous landmarks (Millennium stadium, Blackpool pleasure beach), year 4 countries and continents (Paris, map of the world…)

Progression in calculation at Sudbury Primary School

Addition:

• Joining two groups and then recounting all objects using one-to-one correspondence
• Counting on
• Part-part-whole
• Regrouping ten ones to make ten 
• ‘Make ten’ strategy 
• Adding three single digit numbers (make ten first)
• ‘Make ten’ strategy 
• Adding three single digit numbers (make ten first)
• Partitioning to add (no regrouping) 
• Introducing column method for addition, regrouping only
• Partitioning one number, then adding tens and ones
• Rounding one number, then adding the tens and taking away extra ones
• Partitioning to add without regrouping
• Column method with regrouping
• Make ten strategy
• Using known facts

Subtraction:

• Using known facts - Pictures and crossing out or circling.  Pictorial and abstract and objects/concrete can be used as well.
• Taking away from the ones
• Counting back
• Make ten strategy
• Regroup a ten into 10 ones
• Taking away from the tens 
• Partitioning to subtract without regrouping
• Column method with regrouping
• Subtracting tens and ones
• Subtracting tens and adding extra ones
• Partitioning to subtract without regrouping
• Column method with regrouping
• Bridging through ten

Multiplication:

• Skip counting in multiples of 2, 5, 10 from zero
• Solve multiplications using repeated addition
• Skip counting in multiples of 2, 3, 4, 5, 10 from 0
• Multiplication is commutative
• Bar modelling to represent the parts, the whole and the number of parts in multiplication word problems
• Use of part-part-whole model to establish the inverse relationship between multiplication and division
• Doubling to derive new multiplication facts
• Ten times bigger
• Multiplying by 10, 100 and 1000
• Multiplication of 2-digit numbers with partitioning (no regrouping)
• Multiplication of 2-digit numbers with partitioning (regrouping)
• Show with a video at the end alongside division
• Short multiplication of 3-digit number by 1-digit number

Division:

• Sharing objects into groups
• Division as sharing
• Use of part-part-whole model to represent division equations and to emphasise the relationship between division and multiplication
• Division by partitioning and sharing into equal groups with no regrouping required