# Mathematics – Multi-age – Year B – Unit 15

This two-week unit develops student knowledge and skills in understanding that a fraction can mean half a collection or half a measure.

Mathematics K-2 Syllabus © 2022 NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales.

Students are provided opportunities to:

• engage in meaningful activities using repeated halving to explore halves, quarters or eighths
• create and explore collections of objects that have or have not been divided into halves, quarters or eighths
• share objects into smaller groups and recognise if the number in each group is equal or not
• investigate division through sharing and grouping a collection, including leftovers.

### Early Stage 1

##### Representing whole numbers – MAO-WM-01, MAE-RWN-01, MA1-RWN-01, MAE-RWN-02, MA1-RWN-02
• Use the counting sequence of ones flexibly
• Recognise number patterns
• Connect counting and numerals to quantities
##### Combining and separating quantities – MAO-WM-01, MAE-CSQ-01, MAE-CSQ-02
• Model additive relations and compare quantities
• Identify part–whole relationships in numbers up to 10
##### Forming groups – MAO-WM-01, MAE-FG-01, MAE-FG-02, MA1-FG-01

• Investigate equal groups by sharing
• Record grouping and sharing

##### Geometric measure – MAO-WM-01, MAE-GM-03, MA1-GM-03
• Length: Create half a length

### Stage 1

##### Representing whole numbers A
• Represent the structure of groups of ten in whole numbers
• Represent numbers on a line
##### Representing whole numbers B
• Use counting sequences of ones and tens flexibly
• Form, regroup, and rename three-digit numbers
##### Forming groups A
• Recognise and represent division
##### Forming groups B
• Model doubling and halving with fractions
##### Geometric measure A
• Length: Subdivide lengths to find halves and quarters
##### Geometric measure B
• Length: Repeatedly halve lengths to form eighths