Year 1 Mathematics – Term 4 (WA Curriculum): Division and More

What this unit covers

In Term 4, Year 1 Mathematics in the WA Curriculum centres on the unit “Division and More”.

Term 4 Mathematics for Year 1. Focus areas: division, decimals intro. Aligned with WA Curriculum v9.

Lesson sequence (40 lessons)

The unit breaks down into the following lesson-by-lesson sequence — each title below is a teachable lesson, in order:

1. Recognising Australian Coins by Size and Colour
2. Identifying Australian Notes by Colour and Features
3. Ordering Coins from Smallest to Largest Value
4. Counting Collections of Same Coins
5. Making Amounts Using Different Coin Combinations
6. Exploring Equal Sharing with Physical Objects
7. Dividing Collections into Two Equal Groups
8. Creating Halves by Folding Shapes and Objects
9. Sharing Collections Equally Between Three People
10. Using Role-Play to Show Sharing Situations
11. Skip Counting by Twos to 20 Using Concrete Materials
12. Skip Counting by Fives to 50 with Hands and Objects
13. Skip Counting by Tens to 100 Using Base-Ten Blocks
14. Partitioning Numbers to 20 Using Part-Part-Whole
15. Exploring Different Ways to Make Numbers to 10
16. Representing Addition Stories with Concrete Materials
17. Representing Subtraction Stories with Role-Play
18. Creating Repeating Patterns with Two Elements
19. Identifying the Core Unit in Repeating Patterns
20. Continuing Patterns with Three Different Elements
21. Reading and Writing Numbers from 100 to 120
22. Ordering Numbers from 100 to 120 on a Number Line
23. Grouping Collections of 100 Objects by Tens
24. Exploring Tenths Using Concrete Fraction Models
25. Comparing Prices Using Australian Coins and Notes
26. Solving Simple Shopping Problems with Role-Play
27. Reviewing Equal Sharing and Grouping Strategies
28. Applying Number Skills in Real-World Contexts
29. Exploring Sides and Corners of 2D Shapes Using Informal Language
30. Comparing Object Lengths by Lining Up and Counting Paper Clips
31. Finding Shapes Around Us and Describing Their Sides
32. Measuring Around Classroom Objects Using Connecting Cubes
33. Describing Where Objects Are Using Position Words
34. Exploring Corners and Turns in Our Environment
35. Identifying Things That Will Happen, Might Happen, or Won't Happen
36. Using Everyday Words to Describe How Likely Events Are
37. Collecting Data by Asking Simple Questions About Our Class
38. Recording Our Data Using Tally Marks and Simple Charts
39. Comparing Groups in Our Data to Find What Has More or Less
40. Answering Questions About Our Data and Sharing What We Found

Curriculum codes in this unit

Content codes:

Reading the codes: WA codes (the ones starting with WA) pack the year level, learning area, strand and content number into one string, while the national Australian Curriculum v9 uses a different anatomy that starts with AC9 — same content family, different labels. Our complete WA Curriculum guide decodes both, character by character.

Planning notes for Term 4

WA terms run roughly 9–11 weeks, and in 2026 Term 4 runs from Monday 12 October to Thursday 17 December — 10 weeks for WA public schools. With 40 lessons in this unit, that leaves breathing room for assessment, moderation and the weeks that disappear to carnivals, camps and public holidays — plan the assessable work to land two to three weeks before the end of term rather than in the final week.