Additive structures: addition and subtraction
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Why this why now
This unit develops the use of symbols to represent addition and subtraction stories and contexts. Pupils apply their understanding of the relationship between part-part-whole structures and addition and extend that to include subtraction representing decreasing an amount. Pupils also develop their understanding of the link between addition and subtraction using the inverse.
Prior knowledge requirements
- Understand part-whole relationships
- Recognise inverse nature of addition and subtraction
- Use equations and bar models to represent problems
Threads
Why this why now
This unit develops the use of symbols to represent addition and subtraction stories and contexts. Pupils apply their understanding of the relationship between part-part-whole structures and addition and extend that to include subtraction representing decreasing an amount. Pupils also develop their understanding of the link between addition and subtraction using the inverse.
Prior knowledge requirements
- Understand part-whole relationships
- Recognise inverse nature of addition and subtraction
- Use equations and bar models to represent problems
Additive structures: addition and subtraction
In this unit pupils will find missing addends in equations. They will partition a whole into 2 parts representing first, then, now stories with subtraction equations. They will learn + and - are inverse operations.
10 lessons in unit
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