# Mathematics – Early Stage 1 – Unit 19

This two-week unit develops student knowledge, understanding and skills with 2D shapes, 3D objects, volume, and internal volume (capacity).

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:

• name, describe and represent 2D shapes
• explore familiar 3D objects by sorting, stacking, describing, and making representations
• recognise that flat surfaces of 3D objects can be named as 2D shapes
• measure and compare volume of various 3D objects
• measure and compare internal volume (capacity) of various 3D objects.

## Syllabus focus and content group

### Early Stage 1

#### Representing whole numbers – MAO-WM-01, MAE-RWN-01, MAE-RWN-02

• Instantly name the number of objects within small collections
• Recognise number patterns

#### Two-dimensional spatial structure – MAO-WM-01, MAE-2DS-01, MAE-2DS-02

• 2D shapes: Sort, describe and name familiar shapes
• 2D shapes: Represent shapes

#### Three-dimensional spatial structure – MAO-WM-01, MAE-3DS-01, MAE-3DS-02

• 3D objects: Explore familiar three-dimensional objects
• Volume: Compare internal volume by filling and packing
• Volume: Compare volume by building