Comparing quantities - part part whole relationships
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Why this why now
This unit moves on from counting to comparing items and attaching value to those items through various criteria. Equality is seen as a result of comparison and considered alongside inequality. Learning then develops to look at part-part-whole relationships using objects which are then represented with numerals. This provides the language and structure needed to move onto the following units on composition of numbers.
Prior knowledge requirements
- Use bar models to compare two quantities
- Understand language of comparison (more than, less than, difference)
- Represent part-whole relationships using diagrams or equations
Threads
Why this why now
This unit moves on from counting to comparing items and attaching value to those items through various criteria. Equality is seen as a result of comparison and considered alongside inequality. Learning then develops to look at part-part-whole relationships using objects which are then represented with numerals. This provides the language and structure needed to move onto the following units on composition of numbers.
Prior knowledge requirements
- Use bar models to compare two quantities
- Understand language of comparison (more than, less than, difference)
- Represent part-whole relationships using diagrams or equations
Comparing quantities - part part whole relationships
In this unit pupils will explain that items can be compared using length and height, mass and volume/capacity. They will compare sets of objects using equality/inequality symbols. Pupils will also explore part-part-whole relationships with representations.
15 lessons in unit
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