# Mathematics – Early Stage 1 – Unit 5

New shapes can be made by joining (combining) or partitioning (breaking apart) existing shapes – develops students understanding of how new shapes can be made from existing shapes by exploring the attributes of shapes, and by using combination and partitioning.

Mathematics K-2 Syllabus © 2021 NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales.

In this unit students will learn to:

• two-dimensional (2D) shapes can be made by joining (combining) and breaking apart (partitioning) existing shapes
• shapes have attributes that are necessary for classification as that shape (features of triangles, circles, squares, rectangles)
• necessary attributes are called features
• shapes and objects can be halved in different ways
• new shapes can be created by adding or removing sides
• numbers, like shapes, have smaller numbers hiding inside of them (numbers 0 to 10)

## Syllabus focus and content group

### Early Stage 1

##### Representing whole number – MAO-WM-01, MAE-RWN-01, MAE-RWN-02
• Instantly name the number of objects within small collections
• 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
##### Geometric measure – MAO-WM-01, MAE-GM-03
• Length: Create half a length
##### Two-dimensional spatial structure–MAO-WM-01, MAE-2DS-01
• 2D shapes: Sort, describe and name familiar shapes
• 2D shapes: Represent shapes